使用Linq数据库C＃显示特定行并在GridView中更新

Question

I am new in C# and I want to display specific rows in GridView. I could do this but I could not update it. My code:

 private void bindGridView()
    {
        myContextDataContext context = new myContextDataContext();
        var q2 = from p in context.employees
                 where p.check_is_mngr == 1
                 select p;
        employeeDataGridView.DataSource = q2;
    }

I called bindgridview() in bossAcc_Load function.In my form,I have add_new button and save button. This is save button function:

private void button5_Click(object sender, EventArgs e)
    {
        this.Validate();
        this.employeeBindingSource.EndEdit();
        this.tableAdapterManager.UpdateAll(this.my_proDataSet);   

    }

But when I click save button,didn't update data.What should I do?

Answer 1

Try this,

var q2 = from p in context.employees
                 where p.check_is_mngr == 1
                 select p;
employeeDataGridView.DataSource = null;
employeeDataGridView.DataSource = q2 ;