Search Is Not Working Getting Error ...

Question

Error as Follows: System.Web.HttpException: A field or property with the name 'RequestID' was not found on the selected data source.

 

public DataSet Bind()

{

SqlConnection con = new SqlConnection(connectString);

sqlCon = new SqlConnection(connectString);

SqlCommand cmd = new SqlCommand("select * from tbl_usermaster where UserName like'" + TextBox1.Text + "%'", con);

SqlDataAdapter da = new SqlDataAdapter(cmd);

DataSet ds = new DataSet();

DataTable dt = new DataTable();

da.Fill(ds);

if (!object.Equals(ds, null))

{

if (ds.Tables[0].Rows.Count != 0)

{

// cmd.ExecuteReader();

gv_calllist.DataSource = ds;

// gv_calllist.DataSource = ds.Tables[0];

gv_calllist.DataBind();

}

}

return ds;

}

 

protected void Button1_Click(object sender, EventArgs e)

{

DataSet ds = Bind();

if (!object.Equals(ds, null))

{

if (ds.Tables[0].Rows.Count > 0)

{

gv_calllist.Visible = true;

TextBox1.Text = " ";

Label2.Text = " ";

}

else

{

gv_calllist.Visible = false;

Label2.Visible = true;

Label2.Text = "not available in the record";

}

}

}