How to use parametrised SQL query in asp.net

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Hi,
I am trying to use the following query

VB

Dim sqlQry As String = "SELECT * FROM tblTest where Name=@NM and Rank=@RN"
    
Then I fill my dataadapter by
Dim dAdt As New SqlDataAdapter(sqlQry, conStr)

But donot know where to put the parameters that I have set after where clause.

Thanks

Posted 6-Sep-11 5:40am

Furqan Sehgal

Updated 6-Sep-11 5:41am

v2

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2 solutions

Solution 1

Check this out, Using Parameters with the SqlDataSource Control[^] .

Posted 6-Sep-11 5:46am

Abhijit Jana

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Wendelius · Accepted Answer · 2011-09-06T05:52:00

Instead of passing the SQL string to the adapter create a SqlCommand[^], define the SqlParameters[^] and use that command for your adapter. When doing this you also have to create the SqlConnection.

So something like:

VB

Dim databaseConnection As New SqlConnection
Dim queryCommand As New SqlCommand

databaseConnection.ConnectionString = conStr
databaseConnection.Open
queryCommand.CommandText = "SELECT * FROM tblTest where Name=@NM and Rank=@RN"
queryCommand.Parameters.AddWithValue("@NM", someNMvariable)
queryCommand.Parameters.AddWithValue("@RN", someRNvariable)
queryCommand.Connection = databaseConnection
Dim dAdt As New SqlDataAdapter(queryCommand)
...
databaseConnection.Close