How can I pass a DataTable from C# to SQL Server 2008?
Exception:
The table type parameter '#CurrentTableInitial' must have a valid type
name.
Table structure:
CREATE TABLE [dbo].[RegisterChoiceUserInitial](
[RegisterChoiceUserInitialID] [int] IDENTITY(1,1) NOT NULL,
[UserId] [uniqueidentifier] NOT NULL,
[RegisterChoiceUserInitialJob] [nvarchar](50) NULL,
[RegisterChoiceUserInitialOrganization] [nvarchar](50) NULL,
[RegisterChoiceUserInitialUnit] [nvarchar](50) NULL,
[RegisterChoiceUserInitialMembershipType] [nvarchar](50) NULL,
[RegisterChoiceUserInitialStart] [nvarchar](10) NULL,
[RegisterChoiceUserInitialEnd] [nvarchar](10) NULL,
CONSTRAINT [PK_RegisterChoiceUserInitial] PRIMARY KEY CLUSTERED
(
[RegisterChoiceUserInitialID] ASC
)
User-defined type:
CREATE TYPE [dbo].[TableTypeInitial] AS TABLE(
[ID] [int] NULL,
[InitialJob] [nvarchar](50) NULL,
[InitialOrganization] [nvarchar](50) NULL,
[InitialUnit] [nvarchar](50) NULL,
[InitialMembershipType] [nvarchar](50) NULL,
[InitialMembershipStart] [nvarchar](10) NULL,
[InitialMembershipEnd] [nvarchar](10) NULL
)
Stored procedure:
create PROCEDURE [dbo].[FinishRegisterChoiceUserInitial]
( #UserId uniqueidentifier,
#TableVariable TableTypeInitial READONLY)
AS
BEGIN
INSERT INTO [Election].[dbo].[RegisterChoiceUserInitial]
([UserId]
,[RegisterChoiceUserInitialJob]
,[RegisterChoiceUserInitialOrganization]
,[RegisterChoiceUserInitialUnit]
,[RegisterChoiceUserInitialMembershipType]
,[RegisterChoiceUserInitialStart]
,[RegisterChoiceUserInitialEnd])
SELECT
#UserId AS UserId
,InitialJob
,InitialOrganization
,InitialUnit
,InitialMembershipType
,InitialMembershipStart
,InitialMembershipEnd
FROM
#TableVariable
END
DataTable:
DataTableInitial.Columns.Add(new DataColumn("ID", typeof(int)));
DataTableInitial.Columns.Add(new DataColumn("InitialJob", typeof(String)));
DataTableInitial.Columns.Add(new DataColumn("InitialOrganization", typeof(String)));
DataTableInitial.Columns.Add(new DataColumn("InitialUnit", typeof(String)));
DataTableInitial.Columns.Add(new DataColumn("InitialMembershipType", typeof(String)));
DataTableInitial.Columns.Add(new DataColumn("InitialMembershipStart", typeof(String)));
DataTableInitial.Columns.Add(new DataColumn("InitialMembershipEnd", typeof(String)));
cmd.CommandText = "EXEC FinishRegisterChoiceUserInitial #UserId, #CurrentTableInitial ";
cmd.Parameters.AddWithValue("#UserId",user.ProviderUserKey);
DataTable TableInitial=(DataTable)ViewState["CurrentTableInitial"];
SqlParameter a = cmd.Parameters.AddWithValue("#CurrentTableInitial", TableInitial);
a.SqlDbType = SqlDbType.Structured;
cmd.ExecuteNonQuery();
You were missing a.TypeName = "dbo.TableTypeInitial";
Put this statement before "a.SqlDbType = SqlDbType.Structured;"
Use
cmd.CommandText = "EXEC FinishRegisterChoiceUserInitial #UserId, #TableTypeInitial ";
instead of
cmd.CommandText = "EXEC FinishRegisterChoiceUserInitial #UserId, #CurrentTableInitial ";
Sql Server Scripts :
CREATE TABLE [Target]
(
[ID] [int] NOT NULL PRIMARY KEY IDENTITY,
[FirstName] [varchar](100)NOT NULL,
[LastName] [varchar](100)NOT NULL,
[Email] [varchar](200) NOT NULL
)
CREATE TYPE [TargetUDT] AS TABLE
(
[FirstName] [varchar](100)NOT NULL,
[LastName] [varchar](100)NOT NULL,
[Email] [varchar](200) NOT NULL
)
CREATE PROCEDURE AddToTarget(#TargetUDT TargetUDT READONLY)
AS
BEGIN
INSERT INTO [Target]
SELECT * FROM #TargetUDT
END
Sample Code :
public static void StartProcess()
{
//Create a local data table to hold customer records
DataTable dtCustomers = new DataTable("Customers");
DataColumn dcFirstName = new DataColumn("FirstName", typeof(string));
DataColumn dcLastName = new DataColumn("LastName", typeof(string));
DataColumn dcEmail = new DataColumn("Email", typeof(string));
dtCustomers.Columns.Add(dcFirstName);
dtCustomers.Columns.Add(dcLastName);
dtCustomers.Columns.Add(dcEmail);
//Add customer 1
DataRow drCustomer = dtCustomers.NewRow();
drCustomer["FirstName"] = "AAA";
drCustomer["LastName"] = "XYZ";
drCustomer["Email"] = "aaa#test.com";
dtCustomers.Rows.Add(drCustomer);
//Add customer 2
drCustomer = dtCustomers.NewRow();
drCustomer["FirstName"] = "BBB";
drCustomer["LastName"] = "XYZ";
drCustomer["Email"] = "bbb#test.com";
dtCustomers.Rows.Add(drCustomer);
//Add customer 3
drCustomer = dtCustomers.NewRow();
drCustomer["FirstName"] = "CCC";
drCustomer["LastName"] = "XYZ";
drCustomer["Email"] = "ccc#test.com";
dtCustomers.Rows.Add(drCustomer);
//Create Connection object to connect to server/database
SqlConnection conn = new SqlConnection(ConStr);
conn.Open();
//Create a command object that calls the stored procedure
SqlCommand cmdCustomer = new SqlCommand("AddToTarget", conn);
cmdCustomer.CommandType = CommandType.StoredProcedure;
//Create a parameter using the new SQL DB type viz. Structured to pass as table value parameter
SqlParameter paramCustomer = cmdCustomer.Parameters.Add("#TargetUDT", SqlDbType.Structured);
paramCustomer.Value = dtCustomers;
//Execute the query
cmdCustomer.ExecuteNonQuery();
}
Related
I am trying to create a generic module that will load .csv files into SQL tables. The SQL tables are already created and their names, and the name of the file, will be passed as parameters. This what I have so far...
public void Main()
{
var mFilepath = Dts.Variables["InputFile"].Value.ToString();
var mSQLTable = "[Staging].[tblLoadBUF]";
Dts.Variables["StagingTableGetColumnsScript"].Value =
"IF EXISTS (SELECT 1 FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_NAME = 'tblLoadBUF') " +
"BEGIN; " +
"SELECT COLUMN_NAME " +
"FROM INFORMATION_SCHEMA.COLUMNS " +
"WHERE TABLE_NAME = 'tblLoadBUF'; " +
"END; ";
string connectionString = Dts.Connections["OLEDB_CONN"].ConnectionString;
connectionString = connectionString.Trim(';');
var connStrDictionary = connectionString.Split(';').Select(x => x.Split('=')).ToDictionary(x => x[0], x => x[1]);
connectionString = "Data Source=" + connStrDictionary["Data Source"] + ";Initial Catalog=" + connStrDictionary["Initial Catalog"] + ";Integrated Security=" + connStrDictionary["Integrated Security"];
try
{
DataTable dt = new DataTable();
string contents = File.ReadAllText(mFilepath, System.Text.Encoding.GetEncoding(1252));
TextFieldParser parser = new TextFieldParser(new StringReader(contents));
parser.HasFieldsEnclosedInQuotes = true;
parser.SetDelimiters(",");
string[] fields;
while (!parser.EndOfData)
{
fields = parser.ReadFields();
if (dt.Columns.Count == 0)
{
foreach (string field in fields)
{
dt.Columns.Add(new DataColumn(string.IsNullOrWhiteSpace(field.Trim('\"')) ? null : field.Trim('\"'), typeof(string)));
}
}
else
{
dt.Rows.Add(fields.Select(item => string.IsNullOrWhiteSpace(item.Trim('\"')) ? null : item.Trim('\"')).ToArray());
}
}
parser.Close();
var columnNames = new List<string>();
using (var cn = new SqlConnection() { ConnectionString = connectionString })
{
using (var cmd = new SqlCommand() { Connection = cn })
{
cmd.CommandText = Dts.Variables["StagingTableGetColumnsScript"].Value.ToString();
cn.Open();
var reader = cmd.ExecuteReader();
while (reader.Read())
{
columnNames.Add(reader.GetString(0));
}
cn.Close();
}
}
using (SqlConnection con = new SqlConnection(connectionString))
{
using (SqlBulkCopy sqlBulkCopy = new SqlBulkCopy(con))
{
sqlBulkCopy.DestinationTableName = mSQLTable;
sqlBulkCopy.ColumnMappings.Clear();
con.Open();
foreach (var column in columnNames)
{
sqlBulkCopy.ColumnMappings.Add(column.ToString(), column.ToString());
}
sqlBulkCopy.WriteToServer(dt);
con.Close();
}
}
Dts.TaskResult = (int)ScriptResults.Success;
}
catch (Exception ex)
{
Dts.Events.FireError(0, "Something went wrong ", ex.ToString(), string.Empty, 0);
Dts.TaskResult = (int)ScriptResults.Failure;
}
}
I get the following error message at execution:
System.InvalidOperationException: The given value of type String from the data source cannot be converted to type bit of the specified target column. ---> System.FormatException: Failed to convert parameter value from a String to a Boolean. ---> System.FormatException: String was not recognized as a valid Boolean.
Can somebody help me fix this ? I understand the error message, but I find it strange that it doesn't complain about decimal or integer values.
Here is my SQL Table:
CREATE TABLE [Staging].[tblLoadBUF](
[Bg_SN] [NVARCHAR](12) NOT NULL,
[Bg_Type] [NVARCHAR](7) NOT NULL,
[Bg_Expected_BUs] [NUMERIC](4, 0) NOT NULL,
[Bg_Validity_Likelihood] [DECIMAL](5, 4) NOT NULL,
[Bg_Mixed_Usage] [NUMERIC](1, 0) NOT NULL,
[Bg_Status] [NVARCHAR](1) NOT NULL,
[BU_SN] [NVARCHAR](12) NOT NULL,
[BU_Residential_Occup_Likelihood] [DECIMAL](5, 4) NOT NULL,
[BU_Last_Res_Confirmation] [DATE] NULL,
[BU_Last_NRes_Usage] [NVARCHAR](7) NULL,
[BU_Last_NRes_Confirmation] [DATE] NULL,
[BU_Validity_Likelihood] [DECIMAL](5, 4) NOT NULL,
[BU_Status] [NVARCHAR](1) NOT NULL,
[BU_Mailing_Address_Availability] [NUMERIC](1, 0) NOT NULL,
[BU_Mailing_Address_Likelihood] [DECIMAL](5, 4) NULL,
[BU_Usage] [NUMERIC](1, 0) NOT NULL,
[BU_Co_SN] [NVARCHAR](12) NULL,
[Co_Type] [NVARCHAR](5) NULL,
[Co_Validity_Likelihood] [DECIMAL](5, 4) NULL,
[Co_Status] [NVARCHAR](1) NULL,
[TN_LTotal] [INT] NOT NULL,
[TN_CTotal] [INT] NOT NULL,
[TN_OTotal] [INT] NOT NULL,
[TN_Total] [INT] NOT NULL,
[EA_Total] [INT] NOT NULL,
[BB_UID] [NUMERIC](10, 0) NULL,
[BB_BPIR] [NVARCHAR](4) NOT NULL,
[CUID] [NVARCHAR](8) NULL,
[COLB] [NVARCHAR](10) NULL,
[DAID] [NVARCHAR](8) NULL,
[DISB] [NVARCHAR](11) NULL,
[CSD_Name] [NVARCHAR](100) NULL,
[CSD_UID] [NVARCHAR](7) NULL,
[CSD_Type] [NVARCHAR](3) NULL,
[SAC_Code] [NVARCHAR](3) NULL,
[PC_CUID] [NVARCHAR](8) NULL,
[PC_DAID] [NVARCHAR](8) NULL,
[PC_CSD_UID] [NVARCHAR](7) NULL,
[PC_CSD_Type] [NVARCHAR](3) NULL,
[PC_SAC_Code] [NVARCHAR](3) NULL,
[LFS_UID] [NVARCHAR](13) NULL,
[ER_UID] [NVARCHAR](4) NULL,
[HR_UID] [NVARCHAR](4) NULL,
[PRCODE] [NVARCHAR](2) NOT NULL,
[BU_CPC_Postal_Code] [NVARCHAR](6) NULL,
[Bg_Latitude] [DECIMAL](9, 6) NULL,
[Bg_Longitude] [DECIMAL](11, 6) NULL,
[Bg_Coordinate_Type] [NVARCHAR](1) NOT NULL,
[AR_UID] [NVARCHAR](10) NULL,
[Frame_ID] [NVARCHAR](8) NULL,
[Do_Not_Contact_Flag] [BIT] NULL,
PRIMARY KEY CLUSTERED
(
[BU_SN] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY]
GO
And my .csv file contains values of 1 and 0 in column [Do_Not_Contact_Flag].
Pease note that English is not my primary language, so just let me know if this is not clear enough. And thanks in advance for you help :-)
Mylene
I found the solution !!
I've modified my staging table column [Do_Not_Contact_Flag] to be SMALLINT, and added the conversion to BIT in my processing stored proc before loading in the final SQL Table.
I am trying to pass my DataTable to a stored procedure. The DataTable holds the contents of an Excel sheet. The Excel sheet has two empty columns, five with text, and five with decimal numbers.
The empty columns are OppdragsMVAkode and OppdragsgebyrMVAkode.
If I run my application, I get this exception:
System.ArgumentException: Input string was not in a correct format. Couldn't store <> in OppdragsMVAkode Column. Expected type is Decimal.
If I add a temporary number, I get this exception:
System.Data.SqlClient.SqlException: Error converting data type nvarchar to numeric.
I don't get why it's reading it as a string.
My stored procedure (spGetTrips):
ALTER PROCEDURE [dbo].[spGetTrips]
#trips udtTripsPerMonth readonly
AS
BEGIN
INSERT INTO tblTripsPerMonth
SELECT
[KjøretøyID],
SUBSTRING([År], 7, 4),
SUBSTRING([Måned], 4, 2),
[Betaling (brutto)],
[Betaling (netto)],
[Bestillingsgebyr (netto)],
[Betalingsgebyr (netto)],
[OppdragsMVAkode],
CONCAT(LøyvehaverFakturaID, + 'UF-' + SUBSTRING([År], 9, 2) + SUBSTRING([Måned], 4, 2)),
[Oppdragsgebyr (netto)],
[OppdragsgebyrMVAkode],
CONCAT([RidelRegionFakturaID], + 'UF-' + SUBSTRING([År], 9, 2) + SUBSTRING([Måned], 4, 2))
FROM #trips
UPDATE tblTripsPerMonth
SET [OppdragsMVAkode] = (
SELECT [ID]
FROM [tblMVAkoder]
WHERE [ID] = 'MVAkode2'
);
UPDATE tblTripsPerMonth
SET [OppdragsgebyrMVAkode] = (
SELECT [ID]
FROM [tblMVAkoder]
WHERE [ID] = 'MVAkode5'
);
END
As you can see above, I am setting the value of the two empty columns with UPDATE clauses in the Stored Procedure. Whether they are empty in the Excel sheet, or with some preliminary value, and then to be overridden, I care not - I just want it to work.
Here's my User-Defined Table Type (udtTripsPerMonth):
CREATE TYPE [dbo].[udtTripsPerMonth] AS TABLE(
[KjøretøyID] [nvarchar](50) NULL,
[År] [nvarchar](50) NULL,
[Måned] [nvarchar](50) NULL,
[Betaling (brutto)] [decimal](10, 2) NULL,
[Betaling (netto)] [decimal](10, 2) NULL,
[Bestillingsgebyr (netto)] [decimal](10, 2) NULL,
[Betalingsgebyr (netto)] [decimal](10, 2) NULL,
[OppdragsMVAkode] [decimal](10, 2) NULL,
[LøyvehaverFakturaID] [nvarchar](50) NULL,
[Oppdragsgebyr (netto)] [decimal](10, 2) NULL,
[OppdragsgebyrMVAkode] [decimal](10, 2) NULL,
[RidelRegionFakturaID] [nvarchar](50) NULL
)
GO
And my table (tblTripsPerMonth):
CREATE TABLE [dbo].[tblTripsPerMonth](
[ID] [int] IDENTITY(1,1) NOT NULL,
[KjøretøyID] [nvarchar](50) NULL,
[År] [nvarchar](50) NULL,
[Måned] [nvarchar](50) NULL,
[Betaling (brutto)] [decimal](10, 2) NULL,
[Betaling (netto)] [decimal](10, 2) NULL,
[Bestillingsgebyr (netto)] [decimal](10, 2) NULL,
[Betalingsgebyr (netto)] [decimal](10, 2) NULL,
[OppdragsMVAkode] [decimal](10, 2) NULL,
[LøyvehaverFakturaID] [nvarchar](50) NULL,
[Oppdragsgebyr (netto)] [decimal](10, 2) NULL,
[OppdragsgebyrMVAkode] [decimal](10, 2) NULL,
[RidelRegionFakturaID] [nvarchar](50) NULL,
PRIMARY KEY CLUSTERED
(
[ID] ASC
)WITH (STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, OPTIMIZE_FOR_SEQUENTIAL_KEY = OFF) ON [PRIMARY]
) ON [PRIMARY]
GO
The other table I reference in the UPDATE clauses (tblMVAkoder):
CREATE TABLE [dbo].[tblMVAkoder](
[ID] [nvarchar](50) NOT NULL,
[Startdato] [date] NULL,
[Sluttdato] [date] NULL,
[MVAsats] [decimal](10, 2) NULL,
PRIMARY KEY CLUSTERED
(
[ID] ASC
)WITH (STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, OPTIMIZE_FOR_SEQUENTIAL_KEY = OFF) ON [PRIMARY]
) ON [PRIMARY]
GO
Here's my C# code (Excel to DataTable):
private void btnExport_Click(object sender, RoutedEventArgs e) {
OpenFileDialog of = new();
of.Filter = "Excel Files | *.xlsx;";
of.Title = "Importer Excel fil.";
if (of.ShowDialog() == true) {
dgPaidTrip.ItemsSource = ImportExceltoDataTable(of.FileName).DefaultView;
btnClearForm.IsEnabled = true;
}
using (SqlConnection con = new(ConnectionString.connectionString))
using (var cmd = new SqlCommand("spGetTrips", con) { CommandType = CommandType.StoredProcedure }) {
con.Open();
DataTable dt = ImportExceltoDataTable(of.FileName);
cmd.Parameters.Add(new SqlParameter("#trips", dt));
cmd.ExecuteNonQuery();
}
}
public static DataTable ImportExceltoDataTable(string filePath) {
using (XLWorkbook wb = new(filePath)) {
IXLWorksheet ws = wb.Worksheet(1);
int tl_Row = ws.FirstCellUsed().Address.RowNumber;
int tl_Col = ws.FirstCellUsed().Address.ColumnNumber;
int br_Row = ws.LastCellUsed().Address.RowNumber;
int br_Col = ws.LastCellUsed().Address.ColumnNumber;
DataTable dt = new();
dt.Columns.Add("KjøretøyID", typeof(string));
dt.Columns.Add("År", typeof(string));
dt.Columns.Add("Måned", typeof(string));
dt.Columns.Add("Betaling (brutto)", typeof(decimal));
dt.Columns.Add("Betaling (netto)", typeof(decimal));
dt.Columns.Add("Bestillingsgebyr (netto)", typeof(decimal));
dt.Columns.Add("Betalingsgebyr (netto)", typeof(decimal));
dt.Columns.Add("OppdragsMVAkode", typeof(decimal));
dt.Columns.Add("LøyvehaverFakturaID", typeof(string));
dt.Columns.Add("Oppdragsgebyr (netto)", typeof(decimal));
dt.Columns.Add("OppdragsgebyrMVAkode", typeof(decimal));
dt.Columns.Add("RidelRegionFakturaID", typeof(string));
IXLRow currentRow;
for (int dtRow = 0; dtRow < br_Row - tl_Row; dtRow++) {
currentRow = ws.Row(tl_Row + dtRow + 1);
dt.Rows.Add();
for (int dtCol = 0; dtCol < br_Col - tl_Col + 1; dtCol++) {
dt.Rows[dtRow][dtCol] = currentRow.Cell(tl_Col + dtCol).Value;
}
}
return dt;
}
}
As far as I can see, all my column types match, as well as their order.
I changed all my types to nvarchar, and the code "works".
But someone smarter than me told me it was not a good idea to fake the column types.
What am I missing?
To pass a null value, you need to set the column value as DBNull.Value. You can set DBNull like this
dt.Rows[dtRow][dtCol] = currentRow.Cell(tl_Col + dtCol).Value ?? (object)DBNull.Value;
You must also set SqlDBType TypeName and Direction properties
cmd.Parameters.Add(
new SqlParameter("#trips", SqlDBType.Structured)
{
TypeName = "dbo.udtTripsPerMonth",
Direction = ParameterDirection.Input,
Value = dt
});
I am trying to write a C# program (.Net core 2.1) to read all the check constraints for a given table from ms sql server database. I am using sys.check_constraints table to get this information, when I tried to read this using ado.net datareader the column 'definition' from this table is always coming as empty though it has value.
SQL Script (DDL, Stored Proc to Get CheckConstraints, Exec state of Stored Proc)
GO
/****** Object: Table [dbo].[Customer] Script Date: 7/10/2019 3:24:22 PM ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE TABLE [dbo].[Customer](
[Id] [bigint] IDENTITY(1,1) NOT NULL,
[CompanyId] [smallint] NOT NULL,
[Prefix] [varchar](4) NOT NULL,
[FirstName] [varchar](50) NOT NULL,
[LastName] [varchar](50) NOT NULL,
[MiddleName] [varchar](50) NULL,
[Suffix] [varchar](4) NULL,
[NickName] [varchar](10) NULL,
[ProfilePictureName] [varchar](50) NULL,
[Company] [varchar](100) NULL,
[DateOfBirth] [date] NOT NULL,
[DateOfDeath] [date] NULL,
[Gender] [char](1) NOT NULL,
[Type] [varchar](10) NOT NULL,
[IsActive] [char](1) NULL,
[CreatedBy] [varchar](50) NOT NULL,
[CreatedOn] [datetime2](7) NOT NULL,
[UpdatedBy] [varchar](50) NULL,
[UpdatedOn] [datetime2](7) NULL,
[Process] [varchar](100) NULL,
[MessageId] [varchar](50) NOT NULL,
[SysStartDate] [datetime2](2) GENERATED ALWAYS AS ROW START NOT NULL,
[SysEndDate] [datetime2](2) GENERATED ALWAYS AS ROW END NOT NULL,
CONSTRAINT [PK_CUSTOMER] PRIMARY KEY CLUSTERED
(
[Id] ASC,
[CompanyId] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY],
PERIOD FOR SYSTEM_TIME ([SysStartDate], [SysEndDate])
) ON [PRIMARY]
WITH
(
SYSTEM_VERSIONING = ON ( HISTORY_TABLE = [dbo].[MSSQL_TemporalHistoryFor_601769201] )
)
GO
ALTER TABLE [dbo].[Customer] ADD DEFAULT ('Y') FOR [IsActive]
GO
ALTER TABLE [dbo].[Customer] WITH CHECK ADD CONSTRAINT [CUSTOMER_PREFIX_CHECK] CHECK (([Prefix]='Dr' OR [Prefix]='Miss' OR [Prefix]='Ms' OR [Prefix]='Mrs' OR [Prefix]='Mr'))
GO
ALTER TABLE [dbo].[Customer] CHECK CONSTRAINT [CUSTOMER_PREFIX_CHECK]
GO
ALTER TABLE [dbo].[Customer] WITH CHECK ADD CONSTRAINT [CUSTOMER_SUFFIX_CHECK] CHECK (([Suffix]='RN' OR [Suffix]='MD' OR [Suffix]='ESQ' OR [Suffix]='DO' OR [Suffix]='DDS' OR [Suffix]='DDM' OR [Suffix]='III' OR [Suffix]='II' OR [Suffix]='I' OR [Suffix]='Sr' OR [Suffix]='Jr'))
GO
ALTER TABLE [dbo].[Customer] CHECK CONSTRAINT [CUSTOMER_SUFFIX_CHECK]
GO
ALTER TABLE [dbo].[Customer] WITH CHECK ADD CONSTRAINT [CUSTOMER_TYPE_CHECK] CHECK (([Type]='Customer' OR [Type]='VENDOR' OR [Type]='INSIDER' OR [Type]='ANALYST' OR [Type]='INVESTOR'))
GO
ALTER TABLE [dbo].[Customer] CHECK CONSTRAINT [CUSTOMER_TYPE_CHECK]
GO
CREATE PROCEDURE [dbo].[GetCheckConstraints_Dup](#tableName as varchar(200))
AS
BEGIN
select
col.[name] as column_name,
con.[definition] As [constraint_value]
from sys.check_constraints con
left outer join sys.objects t
on con.parent_object_id = t.object_id
left outer join sys.all_columns col
on con.parent_column_id = col.column_id
and con.parent_object_id = col.object_id
where t.[name]=#tableName and con.is_disabled=0
order by con.name;
End;
GO
exec GetCheckConstraints_Dup 'Customer'
SQL Server Result
C#
public static List<Constraints> GetConstraints(string tableName,string connectionString)
{
var constraints = new List<Constraints>();
using (SqlConnection connection = new SqlConnection(connectionString))
{
//SqlDataReader
connection.Open();
SqlCommand cmd = new SqlCommand("DBO.GetCheckConstraints_Dup", connection);
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.Add("#tableName", SqlDbType.VarChar).Value = tableName;
using (SqlDataReader dataReader = cmd.ExecuteReader())
{
while (dataReader.Read())
{
constraints.Add(new Constraints() { FieldName = dataReader["column_name"].ToString(), Constraint = ConstraintType.Check, ConstraintValue = dataReader["constraint_value"].ToString() });
}
}
}
return constraints;
}
No repro for me. Does this repro?
using System;
using System.Collections.Generic;
using System.Data;
using System.Data.SqlClient;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace ConsoleApp18
{
class Program
{
static string ddl = #"
GO
--if exists (select * from sys.tables where name = 'Customer')
-- begin
-- ALTER TABLE [dbo].[Customer] SET ( SYSTEM_VERSIONING = OFF)
-- DROP TABLE [dbo].[Customer]
-- DROP TABLE [dbo].[MSSQL_TemporalHistoryFor_601769201]
--end
go
/****** Object: Table [dbo].[Customer] Script Date: 7/10/2019 3:24:22 PM ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE TABLE [dbo].[Customer](
[Id] [bigint] IDENTITY(1,1) NOT NULL,
[CompanyId] [smallint] NOT NULL,
[Prefix] [varchar](4) NOT NULL,
[FirstName] [varchar](50) NOT NULL,
[LastName] [varchar](50) NOT NULL,
[MiddleName] [varchar](50) NULL,
[Suffix] [varchar](4) NULL,
[NickName] [varchar](10) NULL,
[ProfilePictureName] [varchar](50) NULL,
[Company] [varchar](100) NULL,
[DateOfBirth] [date] NOT NULL,
[DateOfDeath] [date] NULL,
[Gender] [char](1) NOT NULL,
[Type] [varchar](10) NOT NULL,
[IsActive] [char](1) NULL,
[CreatedBy] [varchar](50) NOT NULL,
[CreatedOn] [datetime2](7) NOT NULL,
[UpdatedBy] [varchar](50) NULL,
[UpdatedOn] [datetime2](7) NULL,
[Process] [varchar](100) NULL,
[MessageId] [varchar](50) NOT NULL,
[SysStartDate] [datetime2](2) GENERATED ALWAYS AS ROW START NOT NULL,
[SysEndDate] [datetime2](2) GENERATED ALWAYS AS ROW END NOT NULL,
CONSTRAINT [PK_CUSTOMER] PRIMARY KEY CLUSTERED
(
[Id] ASC,
[CompanyId] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY],
PERIOD FOR SYSTEM_TIME ([SysStartDate], [SysEndDate])
) ON [PRIMARY]
WITH
(
SYSTEM_VERSIONING = ON ( HISTORY_TABLE = [dbo].[MSSQL_TemporalHistoryFor_601769201] )
)
GO
ALTER TABLE [dbo].[Customer] ADD DEFAULT ('Y') FOR [IsActive]
GO
ALTER TABLE [dbo].[Customer] WITH CHECK ADD CONSTRAINT [CUSTOMER_PREFIX_CHECK] CHECK (([Prefix]='Dr' OR [Prefix]='Miss' OR [Prefix]='Ms' OR [Prefix]='Mrs' OR [Prefix]='Mr'))
GO
ALTER TABLE [dbo].[Customer] CHECK CONSTRAINT [CUSTOMER_PREFIX_CHECK]
GO
ALTER TABLE [dbo].[Customer] WITH CHECK ADD CONSTRAINT [CUSTOMER_SUFFIX_CHECK] CHECK (([Suffix]='RN' OR [Suffix]='MD' OR [Suffix]='ESQ' OR [Suffix]='DO' OR [Suffix]='DDS' OR [Suffix]='DDM' OR [Suffix]='III' OR [Suffix]='II' OR [Suffix]='I' OR [Suffix]='Sr' OR [Suffix]='Jr'))
GO
ALTER TABLE [dbo].[Customer] CHECK CONSTRAINT [CUSTOMER_SUFFIX_CHECK]
GO
ALTER TABLE [dbo].[Customer] WITH CHECK ADD CONSTRAINT [CUSTOMER_TYPE_CHECK] CHECK (([Type]='Customer' OR [Type]='VENDOR' OR [Type]='INSIDER' OR [Type]='ANALYST' OR [Type]='INVESTOR'))
GO
ALTER TABLE [dbo].[Customer] CHECK CONSTRAINT [CUSTOMER_TYPE_CHECK]
GO
CREATE OR ALTER PROCEDURE [dbo].[GetCheckConstraints_Dup](#tableName as varchar(200))
AS
BEGIN
select
col.[name] as column_name,
con.[definition] As [constraint_value]
from sys.check_constraints con
left outer join sys.objects t
on con.parent_object_id = t.object_id
left outer join sys.all_columns col
on con.parent_column_id = col.column_id
and con.parent_object_id = col.object_id
where t.[name]=#tableName and con.is_disabled=0
order by con.name;
End;
GO
";
static IEnumerable<string> GetBatches(string script)
{
var rdr = new System.IO.StringReader(script);
var sb = new StringBuilder();
while (true)
{
var l = rdr.ReadLine()?.Trim();
if (l == null)
{
var batch = sb.ToString().Trim();
if (batch.Length > 0)
yield return sb.ToString();
break;
}
else if (l.Equals( "GO", StringComparison.OrdinalIgnoreCase))
{
var batch = sb.ToString().Trim();
if (batch.Length > 0)
yield return sb.ToString();
sb.Clear();
}
else
{
sb.AppendLine(l.Trim());
}
}
}
static void Main(string[] args)
{
var constr = "Server=localhost;database=tempdb;integrated security=true";
using (var con = new SqlConnection(constr))
{
con.Open();
foreach (var batch in GetBatches(ddl))
{
var cmd = con.CreateCommand();
cmd.CommandText = batch;
cmd.ExecuteNonQuery();
}
var constraints = GetConstraints("Customer", constr);
foreach (var constraint in constraints)
{
Console.WriteLine($"{constraint.FieldName} {constraint.ConstraintValue}");
}
}
Console.WriteLine("Hit any key to exit");
Console.ReadKey();
}
public static List<Constraints> GetConstraints(string tableName, string connectionString)
{
var constraints = new List<Constraints>();
using (SqlConnection connection = new SqlConnection(connectionString))
{
//SqlDataReader
connection.Open();
SqlCommand cmd = new SqlCommand("DBO.GetCheckConstraints_Dup", connection);
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.Add("#tableName", SqlDbType.VarChar).Value = tableName;
using (SqlDataReader dataReader = cmd.ExecuteReader())
{
while (dataReader.Read())
{
constraints.Add(new Constraints() { FieldName = dataReader["column_name"].ToString(), Constraint = "Check", ConstraintValue = dataReader["constraint_value"].ToString() });
}
}
}
return constraints;
}
public class Constraints
{
public string FieldName { get; internal set; }
public string Constraint { get; internal set; }
public string ConstraintValue { get; internal set; }
}
}
}
I am trying to display my data table with a grid view
protected void show_data(object sender, EventArgs e)
{
string str = "Data Source=(LocalDB)\\MSSQLLocalDB;";
str += "AttachDbFilename=|DataDirectory|DinoData.mdf;";
str += "Integrated Security= True";
SqlConnection c;
c = new SqlConnection(str);
GV.DataSource = User;
GV.DataBind();
}
the error:
An exception of type 'System.InvalidOperationException' occurred in
System.Web.dll but was not handled in user code
Additional information: Data source is an invalid type. It must be
either an IListSource, IEnumerable, or IDataSource.
user table:
CREATE TABLE [dbo].[User] (
[Username] VARCHAR (100) NOT NULL,
[Pasword] VARCHAR (100) NOT NULL,
[FName] VARCHAR (MAX) NOT NULL,
[LName] VARCHAR (MAX) NOT NULL,
[Location] VARCHAR (MAX) NOT NULL,
[Profesion] VARCHAR (MAX) NOT NULL,
[email] VARCHAR (MAX) NOT NULL,
[gender] VARCHAR (MAX) NOT NULL,
[money] INT NOT NULL,
[property] VARCHAR (MAX) NULL,
[xp] INT NOT NULL,
[level] INT NOT NULL,
PRIMARY KEY CLUSTERED ([Username] ASC)
);
What should i do?
If I want to show only part of the table with gridview how to do it?
You have no query to select rows from your database ,you must have a selection statment like :
protected void show_data(object sender, EventArgs e)
{
string str = "Data Source=(LocalDB)\\MSSQLLocalDB;";
str += "AttachDbFilename=|DataDirectory|DinoData.mdf;";
str += "Integrated Security= True";
SqlConnection c;
c = new SqlConnection(str);
DataTable dt = new DataTable();
//For exemple t select all rows in you Table User,you can insert a condition here
String req = "SELECT * FROM [User]";
SqlDataAdapter da = new SqlDataAdapter(req, c);
da.Fill(dt);
GV.DataSource = dt;
GV.DataBind();
}
I am making a gym management system and I am using foreign keys in my tables. Everything was working perfectly, but after I added foreign keys I am getting the following error:
SQLException was Unhandled
The INSERT statement conflicted with the FOREIGN KEY constraint
"FK_member_info_instructor_info". The conflict occurred in database "D:\GYM MANAGEMENT
SYSTEM\GYM MANAGEMENT SYSTEM\BIN\DEBUG\GMSDATABASE.MDF", table "dbo.instructor_info",
column 'InstructorID'.
The statement has been terminated.
This error is pointing to this code:
public void UpdateDatabase(System.Data.DataSet ds)
{
System.Data.SqlClient.SqlCommandBuilder cb = new
System.Data.SqlClient.SqlCommandBuilder(da_1);
cb.DataAdapter.Update(ds.Tables[0]);
}
The above code is in my database collection class which is as following:
class GMSDConnectionClass
{
System.Data.SqlClient.SqlDataAdapter da_1;
System.Data.SqlClient.SqlConnection con;
public string sql_string;
public string strCon;
public string Sql
{
set { sql_string = value; }
}
public string connection_string
{
set { strCon = value; }
}
public System.Data.DataSet GetConnection
{
get { return MyDataSet(); }
}
public System.Data.DataSet MyDataSet()
{
con = new System.Data.SqlClient.SqlConnection(strCon);
con.Open();
da_1 = new System.Data.SqlClient.SqlDataAdapter(sql_string, con);
System.Data.DataSet dat_set = new System.Data.DataSet();
da_1.Fill(dat_set, "Table_data_1");
con.Close();
return dat_set;
}
public void UpdateDatabase(System.Data.DataSet ds)
{
System.Data.SqlClient.SqlCommandBuilder cb = new
System.Data.SqlClient.SqlCommandBuilder(da_1);
cb.DataAdapter.Update(ds.Tables[0]);
}
}
These are my tables which are being used when the error is thrown:
instructor_info table:
CREATE TABLE [dbo].[instructor_info] (
[InstructorID] INT IDENTITY (1, 1) NOT NULL,
[instructor] NVARCHAR (50) NOT NULL,
[father_name] NVARCHAR (50) NULL,
[age] NCHAR (10) NULL,
[address] NVARCHAR (MAX) NULL,
[contact] NVARCHAR (50) NULL,
[height] NCHAR (10) NULL,
[weight] NCHAR (10) NULL,
[chest] NCHAR (10) NULL,
[triceps_biceps] NCHAR (10) NULL,
[waist] NCHAR (10) NULL,
[shoulders] NCHAR (10) NULL,
[thighs] NCHAR (10) NULL,
[calves] NCHAR (10) NULL,
[memberID] INT NULL,
[date_of_admission] DATE NULL,
[photo] IMAGE NULL,
PRIMARY KEY CLUSTERED ([InstructorID] ASC),
CONSTRAINT [FK_instructor_info_member_info] FOREIGN KEY ([memberID]) REFERENCES [dbo].
[member_info] ([memberID])
);
member_info table:
CREATE TABLE [dbo].[member_info] (
[memberID] INT IDENTITY (1, 1) NOT NULL,
[memberName] NVARCHAR (50) NULL,
[father_name] NVARCHAR (50) NULL,
[age] NCHAR (10) NULL,
[address] NVARCHAR (50) NULL,
[contact] NVARCHAR (50) NULL,
[height] NVARCHAR (50) NULL,
[weight] NVARCHAR (50) NULL,
[chest] NVARCHAR (50) NULL,
[triceps_biceps] NVARCHAR (50) NULL,
[waist] NVARCHAR (50) NULL,
[shoulders] NVARCHAR (50) NULL,
[thighs] NVARCHAR (50) NULL,
[calves] NVARCHAR (50) NULL,
[instructorID] INT NULL,
[date_of_admission] DATE NULL,
[photo] IMAGE NULL,
PRIMARY KEY CLUSTERED ([memberID] ASC),
CONSTRAINT [FK_member_info_instructor_info] FOREIGN KEY ([instructorID]) REFERENCES
[dbo].[instructor_info] ([InstructorID])
);
This is my code for the save button on my form:
private void saveBtn_Click(object sender, EventArgs e)
{
DataRow row = memberDataS.Tables[0].NewRow();
row[0] = maxRowsMember + 1;
row[1] = memberName.Text;
row[2] = fatherName.Text;
row[3] = age.Text;
row[4] = address.Text;
row[5] = contact.Text;
row[6] = height.Text;
row[7] = weight.Text;
row[8] = chest.Text;
row[9] = tricepBicep.Text;
row[10] = waist.Text;
row[11] = shoulders.Text;
row[12] = thighs.Text;
row[13] = calves.Text;
row[14] = int.Parse(instructor.Text);
row[15] = dateTimePicker1.Text;
memberDataS.Tables[0].Rows.Add(row);
memberString.UpdateDatabase(memberDataS);
maxRowsMember += 1;
inc = maxRowsMember - 1;
MessageBox.Show("Database updated");
cancelBtn.Enabled = false;
saveBtn.Enabled = false;
addNewMemberBtn.Enabled = true;
}
All help will be appreciated. Thanks a lot.
I believe that your error may be resulting from row 14:
row[14] = int.Parse(instructor.Text);
If my assumption about your code is correct, the instructor variable contains the VARCHAR(50) instructor name, not the INT IDENTITY value of instructorID.