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update all gridview rows at once

Posted By:      Posted Date: October 12, 2010    Points: 0   Category :ASP.Net
 

Hi,

when I execute this code i get the following error:Incorrect syntax near the keyword When.

StringBuilder sb = new StringBuilder();
             foreach (GridViewRow row in GridView1.Rows)
        {
            
            string note1 = (row.FindControl("note1") as TextBox).Text.Replace(",", ".");
            string note2 = (row.FindControl("note2") as TextBox).Text.Replace(",", ".");
            string userID = (row.FindControl("lblUserID1") as Label).Text;
 
            sb.AppendFormat(
                @"UPDATE EXAMEN
             SET NOTE = case  when 
  CODE_MATIERE ='111' then {0}
 
 
         when   CODE_MATIERE ='112' then {1}
          
         END
             where NUM_INSCRIPTION  = {2}
         ;
         ", note1, note2, userID);
 
        }






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