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
Related
I'm trying to call a Stored Procedure in MySql that returns a list of rows and with OUT parameter. Code:
using (MySqlConnection conn = new MySqlConnection("server=***;database=***;uid=***;pwd=***;"))
{
conn.Open();
using var command = conn.CreateCommand();
command.CommandText = "CALL p_detail_get";
command.CommandType = CommandType.StoredProcedure;
command.Parameters.AddWithValue("#FilterJson", JsonConvert.SerializeObject(input));
command.Parameters.Add("#Output", MySqlDbType.Int32);
command.Parameters["#Output"].Direction = ParameterDirection.Output;
command.ExecuteNonQuery();
}
Error:
You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'CALL p_detail_get('{"id":1}', #outParam1);SELECT '' AS '', #outParam1' at line 1
Can you give me an example of the code that can get both - return from procedure and OUT parameter?
when calling statement "SHOW PROCEDURE dbName.SP_Name;" on Teradata Database thorugh the code (.net) i get back empty result set.
but when i run this query on the SQL ASSISTANT with the same credentials, i do receive results...
please note that every other queries on the DB i do get it with no problem.
it came empty only on "SHOW PROCEDURE" command
this is the code:
using (TdConnection cn = new TdConnection(ConnectionString))
{
cn.Open();
TdCommand cmd = cn.CreateCommand();
cmd.CommandTimeout = CommandTimeoutWindow;
cmd.CommandText = query;
using (TdDataAdapter da = new TdDataAdapter(cmd))
{
da.Fill(dt);
}
}
can you suggest an idea..?
thank you
details:
Teradata DB version: 14.00.07.16
.NET Data Provider for Teradata: Teradata.Client.Provider, Version=16.10.0.0
Please give the command type as command type. Text
cmd.CommandText = query;
cmd.CommandType = CommandType.Text;
Also try with an extended connection time out.
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";
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 able to execute MySQL sp. In server it works fine, but when called from asp.net it is not working properly. Below is the stored procedure:
CREATE PROCEDURE `GetCategoryForBackLinkID`(IN BLID int, OUT CatID int)
BEGIN
SELECT CategoryID INTO CatID FROM backlink where BackLinkID = BLID;
END
Below is the asp.net code
MySqlCommand cmd1 = new MySqlCommand("GetCategoryForBackLinkID");
MySqlConnection con1 = new MySqlConnection();
//ConnectionStringSettings mySetting = ConfigurationManager.ConnectionStrings["linkbuilding1Entities3"];
con1.ConnectionString = "server=67.227.183.117;User Id=rammu1;Pwd=eframmu1;database=linkbuilding1;Persist Security Info=True";
cmd1.Connection = con1;
using (cmd1.Connection)
{
cmd1.Connection.Open();
MySqlParameter returnParameter1 = cmd1.Parameters.Add("BLID", MySqlDbType.Int16);
returnParameter1.Direction = ParameterDirection.Input;
returnParameter1.Value = maximumbacklinid;
MySqlParameter returnParameter2 = cmd1.Parameters.Add("CatID", MySqlDbType.Int16);
returnParameter2.Direction = ParameterDirection.Output;
cmd1.ExecuteNonQuery();
CategID = (Int16)returnParameter2.Value;
The error I get is
You have an error in your SQL syntax; check the manual that
corresponds to your MySQL server version for the right syntax to use
near 'GetCategoryForBackLinkID' at line 1.
What is possibly wrong here?
Well, I'm not 100% sure but looks like you need to assing your CommandType property like;
cmd1.CommandType = CommandType.StoredProcedure;
Since you using store procedure, this property is Text by default. That's why your program thinks your "GetCategoryForBackLinkID" string is a valid SQL query, not a store procedure.
When you set the CommandType property to StoredProcedure, you should
set the CommandText property to the name of the stored procedure. The
command executes this stored procedure when you call one of the
Execute methods.
using(MySqlConnection con1 = new MySqlConnection(connString))
using(MySqlCommand cmd1 = con.CreateCommand())
{
cmd1.CommandType = CommandType.StoredProcedure;
// Add your parameter values.
cmd1.ExecuteNonQuery();
CategID = (int)returnParameter2.Value;
}
IN Your connection string one keyword is wrong write Data source not database there.
"server=67.227.183.117;User Id=rammu1;Pwd=eframmu1;Data Source=linkbuilding1;Persist Security Info=True";