I'm trying to execute the results of a stored procedure that takes parameters into a temporary table.
// Create #temptable
// ..
using (DbCommand command = connection.CreateCommand())
{
command.CommandText = "INSERT #temptable EXEC [MystoredProcThatHasParams]";
command.CommandType = CommandType.StoredProcedure;
command.Parameters.Add(someObject)
command.ExecuteNonQuery();
}
Output:
Could not find stored procedure ''.
If I remove command.CommandType = CommandType.StoredProcedure, I get:
Procedure or function 'MystoredProcThatHasParams' expects parameter '#p1' which was not supplied
Is it possible to save the output of a stored procedure that takes parameters from a query in C#?
The command type StoredProcedure uses a special, higher-performance method for connecting to SQL Server (an RPC call), which requires that the command text be exactly the name of a stored procedure. You cannot include Transact-SQL in the command text if you want to use CommandType.StoredProcedure.
Instead, you need to use CommandType.Text and embed the parameters into the SQL string yourself:
cmd.CommandType = CommandType.Text;
cmd.CommandText = "INSERT #temptable EXEC [MystoredProcThatHasParams] #Param1, #Param2";
cmd.Parameters.Add("#Param1", SqlDbType.Int).Value = 1;
cmd.Parameters.Add("#Param2", SqlDbType.VarChar, 100).Value = "Test";
Related
In VB.net I can simply execute a stored procedure in SQL Server 2008 using the query in image below, but in C# I got an error.
Can you help me about the proper syntax in C#?
Thanks
using (SqlConnection conn = new SqlConnection(your-connection-string)) {
conn.Open();
// 1. create a command object identifying the stored procedure
SqlCommand cmd = new SqlCommand("your-procedure-name", conn);
// 2. set the command object so it knows to execute a stored procedure
cmd.CommandType = CommandType.StoredProcedure;
// 3. add parameter to command, which will be passed to the stored procedure
cmd.Parameters.Add(new SqlParameter("#Username", textBox1.Text));
cmd.Parameters.Add(new SqlParameter("#Password", textBox2.Text));
// execute the command
using (SqlDataReader result = cmd.ExecuteReader()) {
// iterate through results, printing each to console
while (result .Read())
{
// Name and Password Should Match with your proc col name
var userName = result["Name"].toString();
var password = result["password"].toString();
}
}
}
For More details Please Read this this
How to execute a stored procedure within C# program
So I have this code inside a stored procedure:
select * from myTable where email = #email
assume that #email is nvarchar(50) and email is a column in the table
I have a DataSet that has the above stored procedure.
I have a DataGridView that has it's data source as the dataset which uses the stored procedure.
I want to pass a value to the #email in the stored procedure. Is this possible?
Yes. Assuming SqlCommand object 'command', just add the Parameters to it. See here
string Email="Email";
string email="somebody#hotmail.com";
command.Parameters.Add(new SqlParameter(Email, email));
Of course, your stored Procedure needs to be expecting the parameter also.
CREATE PROCEDURE [dbo].[usp_YourStoredProc]
(
#Email [nvarchar(50)] = NULL,
.
.
.
You can use this one
// Create the command and set its properties.
SqlCommand command = new SqlCommand();
command.Connection = connection;
command.CommandText = "ProcedureName";
command.CommandType = CommandType.StoredProcedure;
// Add the input parameter and set its properties.
SqlParameter parameter = new SqlParameter();
parameter.ParameterName = "#email";
parameter.SqlDbType = SqlDbType.NVarChar;
parameter.Direction = ParameterDirection.Input;
parameter.Value = textEmail.Text;
// Add the parameter to the Parameters collection. command.Parameters.Add(parameter);
I am fairly new to C# and I'm trying to set up call to a stored procedure in my database which takes one parameter.
I get the error "Procedure or function 'SP_getName' expects parameter '#username', which was not supplied. "
My Stored procedure works ok when I supply it with the parameter and I run it via SQL management studio.
GO
DECLARE #return_value int
EXEC #return_value = [dbo].[SP_getName]
#username = 'bob101'
SELECT 'Return Value' = #return_value
GO
However when I try and call it the error is with how I'm passing the parameter in, but I can't spot what the issue is.
//create a sql command object to hold the results of the query
SqlCommand cmd = new SqlCommand();
//and a reader to process the results
SqlDataReader reader;
//Instantiate return string
string returnValue = null;
//execute the stored procedure to return the results
cmd.CommandText = "SP_getName";
//set up the parameters for the stored procedure
cmd.Parameters.Add("#username", SqlDbType.NVarChar).Value = "bob101";
cmd.CommandType = CommandType.Text;
cmd.Connection = this.Connection;
// then call the reader to process the results
reader = cmd.ExecuteReader();
Any help in spotting my error would be greatly appreciated!
I've also tried looking at these two posts, but I haven't had any luck:
Stored procedure or function expects parameter which is not supplied
Procedure or function expects parameter, which was not supplied
Thanks!
You have stated:
cmd.CommandType = CommandType.Text;
Therefore you are simply executing:
SP_getName
Which works because it is the first statement in the batch, so you can call the procedure without EXECUTE, but you aren't actually including the parameter. Change it to
cmd.CommandType = CommandType.StoredProcedure;
Or you can change your CommandText to:
EXECUTE SP_getName #username;
As a side note you should Avoid using the prefix 'sp_' for your stored procedures
And a further side note would be to use using with IDisposable objects to ensure they are disposed of correctly:
using (var connection = new SqlConnection("ConnectionString"))
using (var cmd = new new SqlCommand("SP_getName", connection))
{
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.Add("#username", SqlDbType.NVarChar).Value = "bob101";
connection.Open();
using (var reader = command.ExecuteReader())
{
while (reader.Read())
{
// Do something
}
}
}
I had this problem, but it wasn't about parameter name of Command Type.
My problem was that when C# calls SP, for each parameter that has no value passes 'default' keyword (i found it in SQL Profiler):
... #IsStop=0,#StopEndDate=default,#Satellite=0, ...
in my case my parameter Type was DateTime :
#StopEndDate datetime
. I Solved my problem by seting default value to this parameter in Stored Procedure :
#StopEndDate datetime=null
Try remove #:
cmd.Parameters.Add("username", SqlDbType.NVarChar).Value = "bob101";
I am new to interfacing DB's with applications and am trying to pull a couple of fields from a database where the parameter I specified should filter out the results. I keep receiving a no parameters or arguments were supplied. Can anyone shed a little insight on this? Thanks.
below is the stored procedure:
ALTER PROC dbo.PassParamUserID
AS
set nocount on
DECLARE #UserID int;
SELECT f_Name, l_Name
FROM tb_User
WHERE tb_User.ID = #UserID;
And here is my code
class StoredProcedureDemo
{
static void Main()
{
StoredProcedureDemo spd = new StoredProcedureDemo();
//run a simple stored procedure that takes a parameter
spd.RunStoredProcParams();
}
public void RunStoredProcParams()
{
SqlConnection conn = null;
SqlDataReader rdr = null;
string ID = "2";
Console.WriteLine("\n the customer full name is:");
try
{
//create a new connection object
conn = new SqlConnection("Data Source=.\\SQLEXPRESS;AttachDbFilename=c:\\Program Files\\Microsoft SQL Server\\MSSQL10.SQLEXPRESS\\MSSQL\\DATA\\UserDB.mdf;Integrated Security=True;Connect Timeout=30;User Instance=True; Integrated Security=SSPI");
conn.Open();
//create command objects identifying the stored procedure
SqlCommand cmd = new SqlCommand("PassParamUserID", conn);
//Set the command object so it know to execute the stored procedure
cmd.CommandType = CommandType.StoredProcedure;
//ADD PARAMETERS TO COMMAND WHICH WILL BE PASSED TO STORED PROCEDURE
cmd.Parameters.Add(new SqlParameter("#UserID", 2));
//execute the command
rdr = cmd.ExecuteReader();
//iterate through results, printing each to console
while (rdr.Read())
{
Console.WriteLine("First Name: {0,25} Last Name: {0,20}", rdr["f_Name"], rdr["l_Name"]);
}
}
You need to modify your SQL stored proc to:
ALTER PROC dbo.PassParamUserID
#UserID int
AS set nocount on
SELECT f_Name, l_Name FROM tb_User WHERE tb_User.ID = #UserID;
At the moment you are just declaring it as a variable within the procedure.
Here are some MSDN articles that may help you going forward:
Creating and Altering Stored procedures
Declaring Local Variables
ALTER PROC dbo.PassParamUserID (#UserID int)
AS
set nocount on
SELECT f_Name, l_Name FROM tb_User WHERE tb_User.ID = #UserID;
If you want to pass a parameter in you need to define it before the AS statement as shown above.
With this
PROCEDURE "ADD_BOOKMARK_GROUP" (
"NAME" IN VARCHAR2,
"BOOKMARK_GROUP_ID" IN NUMBER,
"STAFF_ID" IN VARCHAR2,
"MAX_NO" IN INT,
"NUMFOUND" OUT INT,
"NEW_ID" OUT NUMBER) IS
BEGIN
NEW_ID := -1;
SELECT COUNT(*) INTO NUMFOUND FROM BOOKMARK_GROUP_TABLE WHERE STAFF_ID = STAFF_ID;
IF NUMFOUND < MAX_NO THEN
INSERT INTO BOOKMARK_GROUP_TABLE (NAME, BOOKMARK_GROUP_ID, STAFF_ID) VALUES(NAME, BOOKMARK_GROUP_ID, STAFF_ID);
SELECT BGT_SEQUENCE.currval INTO NEW_ID FROM dual;
END IF;
END;
I find it interesting that if I don't add parameters in the order they were defined in, e.g.
OracleCommand cmd = new OracleCommand("ADD_BOOKMARK_GROUP", conn);
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.Add(new OracleParameter("NAME", name));
...
cmd.Parameters.Add(new OracleParameter("NEW_ID", OracleDbType.Decimal)).Direction = ParameterDirection.Output;
cmd.Parameters.Add(new OracleParameter("NUMFOUND", OracleDbType.Int32)).Direction = ParameterDirection.Output;
instead of
OracleCommand cmd = new OracleCommand("ADD_BOOKMARK_GROUP", conn);
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.Add(new OracleParameter("NAME", name));
...
cmd.Parameters.Add(new OracleParameter("NUMFOUND", OracleDbType.Int32)).Direction = ParameterDirection.Output;
cmd.Parameters.Add(new OracleParameter("NEW_ID", OracleDbType.Decimal)).Direction = ParameterDirection.Output;
The values returned by
cmd.Parameters["NEW_ID"].Value.ToString()
and
cmd.Parameters["NUMFOUND"].Value.ToString()
get swapped, although running the procedure through the VS2008 Server Explorer returns correct data.
Why is this?
You can probably set the BindByName parameter on the OracleCommand object. This works for straight SQL queries with parameters, I've not tried it with stored procedures but it would be logical...
cmd.BindByName = true;
I'm not an Oracle buff, so I can't verify - but it sounds like they are being passed by position (rather than passed by name). The moral equivelent to:
EXEC SomeProc 'Foo', 'Bar'
instead of:
EXEC SomeProc #arg1='Foo', #arg2='Bar'
This isn't hugely uncommon - for years (in the COM days) a lot of my code had to work with a pass-by-position ADODB driver.
In this case, the name that you give serves only as a local key to lookup the value from the collection collection. You can verify easily by inventing a name:
cmd.Parameters.Add(new OracleParameter("BANANA", ...
cmd.Parameters.Add(new OracleParameter("GUITAR", ...
...
cmd.Parameters["BANANA"].Value.ToString()
cmd.Parameters["GUITAR"].Value.ToString()
If the above runs without error, it is passing by position. And it they are passed by position... then simply add them in the right order ;-p And never add new parameters except at the end...
Not an answer to the question but you can use 'insert ... returning ... into ' in stead of select bgt_sequence.currval from dual, for example:
begin
insert into test (id)
values(test_seq.nextval)
returning id into p_id;
end;
See http://www.adp-gmbh.ch/ora/sql/insert_into_x_returning_y.html