تظهر رسالة الخطا التالية عنما احاول عمل Ubdate To Datagrid

private void cus_cat_Load(object sender, EventArgs e)

{

//SetUpDataGridView();

string connectionString = @"Data Source=wa-pc;Initial Catalog=sales;Integrated Security=True";

DataSet ds = new DataSet("sales");

SqlDataAdapter dAdapt = new SqlDataAdapter("Select * From cus_cat", connectionString);

BindingSource bs = new BindingSource();

bs.DataSource = ds;

dAdapt.Fill(ds, "cus_cat");

dataGridView1.DataSource = ds;

dataGridView1.DataMember = "cus_cat";







}



private void dataGridView1_CellContentClick(object sender, DataGridViewCellEventArgs e)

{



}



private void button1_Click(object sender, EventArgs e)

{



string connectionString = @"Data Source=wa-pc;Initial Catalog=sales;Integrated Security=True";

DataSet ds = new DataSet("sales");

SqlDataAdapter dAdapt = new SqlDataAdapter("Select * From cus_cat", connectionString);

BindingSource bs = new BindingSource();



bs.DataSource = ds;


dAdapt.Update(ds,"cus_cat");  //هنا يظهر الخطا  unable to find tablemaping cus_cat

dAdapt.Update(ds,"cus_cat"); //

هنا يظهر الخطا

unable to find tablemaping cus_cat

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