How can you call Stored Procedure in ADO.NET?
You will be using SqlCommand object to call and execute stored procedures. If your stored procedure requires any parameters to be passed, then that is done using parameters object.
Assume that your database contains the following stored procedure:
sProcStudent @RollNo nvarchar(50) As
In this stored procedure, you display set of students whose RollNo match the pattern specified in the parameter @RollNo. For example, if you pass the parameter as XII1 then all students having their roll no starting with this pattern will be displayed. Now how do you call this stored procedure and pass appropriate parameter using ADO.NET in your .NET application? That is demonstrated using the following sample snippet of code:
= New SqlCommand(sProcStudent)
In the above code instead of specifying a query in the sampleCommand, you specify the stored procedure name. You specify the parameter name and type using sampleCommand.Parameters.Add method. You then pass data to the parameter using sampleCommand.Parameters.Item method. The data is received from the User using txtStudRollNo textbox. Hence the textboxs text value is assigned to the parameter.
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