please help.... i want to update the value of STAT field from "PENDING to "APPROVED"

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this is the code in c#..... which i m using.... but it is throughing asn exception....

protected void GVDetails_RowCommand(object sender, GridViewCommandEventArgs e)
    {
        

        if (e.CommandName == "Approved")
        {
                       
            GridViewRow row = (GridViewRow)((Control)e.CommandSource).NamingContainer;
            int Id = Convert.ToInt32(GVDetails.DataKeys[row.RowIndex].Value.ToString()); // for this we have to set the "DataKeyNames="doc_id" in HTML file
            Response.Write("the doc_id is = "+Id);

            cn.Open();
                
            SqlCommand cmd = new SqlCommand("update tdocument set STAT=@STAT where doc_id="+Id+"",cn);
            cmd.Parameters.Add("@STAT", SqlDbType.VarChar,15,"APPROVED");
            cmd.ExecuteNonQuery();   // HERE THE EXCEPTION IS OCCURING ..........The parameterized query '(@STAT varchar(15))update tdocument set STAT=@STAT where doc_id=' expects the parameter '@STAT', which was not supplied.            cn.Close();
        }
        else if (e.CommandName == "Reject")
        {
            Response.Write("Reject");
        }
    }

Posted 15-Feb-12 23:04pm

shweta9999

Updated 15-Feb-12 23:06pm

Varun Sareen

v2

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Varun Sareen 16-Feb-12 5:06am

edit for: added pre tag

ythisbug 16-Feb-12 5:11am

u mean to say u want to update in ur table column as stat field is pending to approved..??

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Varun Sareen · Accepted Answer · 2012-02-15T23:13:00

Dear Friend,

Try this:-

protected void GVDetails_RowCommand(object sender, GridViewCommandEventArgs e)
    {
        
 
        if (e.CommandName == "Approved")
        {       
            GridViewRow row = (GridViewRow)((Control)e.CommandSource).NamingContainer;
            int Id = Convert.ToInt32(GVDetails.DataKeys[row.RowIndex].Value.ToString()); // for this we have to set the "DataKeyNames="doc_id" in HTML file
            Response.Write("the doc_id is = "+Id);
 
            cn.Open();
            
            cmd.Parameters.Add("@STAT", SqlDbType.VarChar,15,"APPROVED");    
            SqlCommand cmd = new SqlCommand("update tdocument set STAT=@STAT where doc_id="+Id+"",cn);
            
            cmd.ExecuteNonQuery();   // HERE THE EXCEPTION IS OCCURING ..........The parameterized query '(@STAT varchar(15))update tdocument set STAT=@STAT where doc_id=' expects the parameter '@STAT', which was not supplied.            
           cn.Close();
        }
        else if (e.CommandName == "Reject")
        {
            Response.Write("Reject");
        }
    }