获取GridView行的主键值

1.后台任意一个位置

获取GridView行的主键值

foreach (GridViewRow row in GridView1.Rows)

{
    string order_Id=this.GridView1.DataKeys[row.RowIndex]["orders_Id"].ToString();
}

红色标注的是主键的字段

2.

我们最常用的，当然就是RowDataBound方法了

在 GridView1_RowDataBound中获取主键的值
protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
    int index = GridView1.DataKeys[e.Row.RowIndex].Value;
}

其次就是删除事件

在 GridView1_RowDeleting中获取主键的值
protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
 {
    int index=GridView1.DataKeys[e.RowIndex].Value;
 }

分页事件

在 GridView1_PageIndexChanging中获取主键的值

protected void GridView1_PageIndexChanging(object sender, GridViewPageEventArgs e)
 {
    int index=GridView1.DataKeys[e.NewPageIndex].Value;
 }

还有其它几个不常用的：

在 GridView1_RowCommand中获取主键的值：

protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)
 {
       int index = GridView1.DataKeys[Convert.ToInt32(e.CommandArgument)].Value;
 }

 

在 GridView1_RowEditing中获取主键的值
protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
 {
     int index = GridView1.DataKeys[e.NewEditIndex].Value;
 }

在 GridView1_RowUpdating中获取主键的值

protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
 {
     int index = GridView1.DataKeys[e.RowIndex].Value;
 }