Row not delete in gridview?

Question

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C#

protected void gid_RowDeleting(object sender, GridViewDeleteEventArgs e)
        {
            Label lblname = (Label)gid.Rows[e.RowIndex].FindControl("lblname");
            con.Open();
          string cmdd = "DELETE from grid where name='" + lblname + "'";
          
          cmd = new SqlCommand(cmdd,con);
          cmd.Parameters.AddWithValue("@name", lblname.Text);
           
            cmd.ExecuteNonQuery();
            con.Close();
            fill_show();
        }

code not work properly
please give solution

What I have tried:

C#

protected void gid_RowDeleting(object sender, GridViewDeleteEventArgs e)
        {
            Label lblname = (Label)gid.Rows[e.RowIndex].FindControl("lblname");
            con.Open();
          string cmdd = "DELETE from grid where name='" + lblname + "'";
          
          cmd = new SqlCommand(cmdd,con);
          cmd.Parameters.AddWithValue("@name", lblname.Text);
           
            cmd.ExecuteNonQuery();
            con.Close();
            fill_show();
        }

Posted 17-Aug-17 20:37pm

Member 13366591

Updated 18-Aug-17 0:47am

Thanks7872

v2

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Comments

Prifti Constantine 18-Aug-17 2:52am

Why are you writing the sql Command in this situation?

Libin C Jacob 18-Aug-17 3:15am

Is it deleting from the database side?

Sinisa Hajnal 18-Aug-17 3:49am

You don't have defined parameter @name in your query. Correct it and it should work. It will also save you from SQL injection - you should NEVER add text from the user directly into the query.

Richard Deeming 18-Aug-17 9:57am

Everything you wanted to know about SQL injection (but were afraid to ask) | Troy Hunt[^]
How can I explain SQL injection without technical jargon? | Information Security Stack Exchange[^]
Query Parameterization Cheat Sheet | OWASP[^]

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Karthik_Mahalingam · Accepted Answer · 2017-08-17T21:42:00

Solution 1

correction

C#

string cmdd = "DELETE from grid where name=@name ";
            cmd = new SqlCommand(cmdd, con);
            cmd.Parameters.AddWithValue("@name", lblname.Text);
            cmd.ExecuteNonQuery();

Posted 17-Aug-17 21:42pm

Karthik_Mahalingam

v2