How to select data based on textfiled value?

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I am using ADO.net to retrieve couple of text field's data from SQL server based on a text field data which I have already. Now When I am trying to query the database , having issue like Must declare the scalar variable .

What I have tried:

using (SqlCommand cmd = new SqlCommand("Select * from tblAcc where " + " uid = @txtsysuser", conn))

Posted 14-May-19 8:35am

SRoy_5

Updated 14-May-19 9:05am

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OriginalGriff · Answer 1 · 2019-05-14T09:05:00

Solution 1

You are specifying a parameter, but then not supplying it.

C#

using (SqlCommand cmd = new SqlCommand("Select * from tblAcc where uid = @txtsysuser", conn))
   {
   cmd.Parameters.AddWithValue("@txtsysuser", valueToCompareTheUIDTo);
   ...
   }

Posted 14-May-19 9:05am

OriginalGriff