updating not work in updating grid view event - asp.net

Question

i test my query in sql server and it's working 100%
but in my page not work !!
this my query
UPDATE Employee SET
Name='jojo',
Age=19,
GenderID=2,
CountryID=5,
Mobile=0917021092
WHERE EmployeeID=10
this my code
protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
{
string s = GridView1.DataKeys[e.RowIndex].Value.ToString();
Label id = (Label)GridView1.Rows[e.RowIndex].FindControl("lblEditID");
Label EmployeeID = (Label)GridView1.Rows[e.RowIndex].FindControl("lblEmployeeID");
TextBox name = (TextBox)GridView1.Rows[e.RowIndex].FindControl("txtEditName");
TextBox age = (TextBox)GridView1.Rows[e.RowIndex].FindControl("txtEditAge");
DropDownList gender = (DropDownList)GridView1.Rows[e.RowIndex].FindControl("DropGender");
DropDownList country = (DropDownList)GridView1.Rows[e.RowIndex].FindControl("DropCountry");
TextBox mobile = (TextBox)GridView1.Rows[e.RowIndex].FindControl("txtEditMobile");
string stringconnectiong = ConfigurationManager.ConnectionStrings["Employee_TestConnectionString"].ConnectionString;
string sql = "update Employee set Name=#Name, Age=#Age,GenderID=#GenderID , CountryID=#CountryID , Mobile=#Mobile where EmployeeID=#EmployeeID AND ID=#ID";
SqlConnection con = new SqlConnection(stringconnectiong);
try
{
con.Open();
SqlCommand cmd = new SqlCommand();
cmd.Parameters.AddWithValue("#EmployeeID", EmployeeID.Text);
cmd.Parameters.AddWithValue("#ID", id.Text);
cmd.Parameters.AddWithValue("#Name", name.Text);
cmd.Parameters.AddWithValue("#Age", age.Text);
cmd.Parameters.AddWithValue("#GenderID", gender.SelectedValue);
cmd.Parameters.AddWithValue("#CountryID", country.SelectedValue);
cmd.Parameters.AddWithValue("#Mobile", mobile.Text);
cmd.CommandType = CommandType.Text;
cmd.CommandText = sql;
cmd.Connection = con;
cmd.ExecuteNonQuery();
SqlDataAdapter dr = new SqlDataAdapter(cmd);
DataSet ds = new DataSet();
dr.Fill(ds);
GridView1.DataSource = ds;
GridView1.EditIndex = -1;
BindGridview();
}
catch (System.Data.SqlClient.SqlException ex)
{
string msg = "Error Updating ";
msg += ex.Message;
throw new Exception(msg);
}
finally
{
con.Close();
con.Dispose();
BindGridview();
}
}

Answer 1

Since your datasource is a dataset, you need to specify which data table within the dataset you are using via the DataMember propery. Or just use a data table as your datasource.
Replace the dataset lines with the following:
DataTable dt = new DataTable();
dr.Fill(dt);
GridView1.DataSource = dt;
In addition, use the GridView1_RowUpdated event. The GridView1_RowUpdating event is fired before the table is updated, therefore your parameter values have not been updated yet.