Question

private void btndelete_Click(object sender, EventArgs e)
{
    if (txtserch.Text == "")
    {
        MessageBox.Show("Enter Customer name to delete");
    }
    else
    {
        l1.conn();
        SqlCommand cmd = new SqlCommand("delete from CUSTOMER where NAME='" + txtserch.Text + "'", l1.connection);
        int a = cmd.ExecuteNonQuery();
        if (a == 1)
        {
            MessageBox.Show("Deleted Sucessfully");
            dataGridView1.Refresh();
            dataGridView1.RefreshEdit();
            dataGridView1.Update();
            txtserch.Text = "";
        }
        else
        {
            MessageBox.Show("Customer Not Exist");
            txtserch.Text = "";
        }
    }
}

Answer 1

DataGridView.Refresh()是图形刷新，而不是数据刷新。将DatagridView重新绑定到源。

DataGridView dataGridView1 = new DataGridView();
dataGridView1.DataSource = source;

// Update Data in src1

dataGridView1.DataSource = null;
dataGridView1.DataSource = source;

Answer 2

为了刷新你的网格重新绑定..

MyGridView.DataSource = ds;
MyGridView.DataBind();

此处 ds 是您向网格提供的数据源。

有关详细信息，请参阅此link

Answer 3

如果您想在编辑/删除/更新操作后将数据绑定到Gridview，那么您要编写以下代码行

GridviewName.DataSource = ds;// retrieve the details and store in ds
GridViewName.DataBind();

插入/删除datagridview后，不显示插入的项目

3 个答案: