Question

我有一个带有2个按钮的数据绑定字段的数据列表。我想启用禁用按钮，具体取决于每行的列（状态）值，因此，例如，如果state的值为0，则应禁用remove按钮，并且当state的值为1时，应同样启用add按钮，反之亦然..

protected void dlEditCaravans_ItemDataBound(object sender, DataListItemEventArgs e)
{
    Button addtoFeauture = e.Item.FindControl("btnAddToFeature") as Button;
    Button removetoFeauture = e.Item.FindControl("btnRemoveFeature") as Button;
    int id = Convert.ToInt32(dlEditCaravans.DataKeys[e.Item.ItemIndex]);
    int check = caravans.GetfeautureValue(id);

    if (check == 0)
    {
        addtoFeauture.Enabled = true;

    }

    else
    {
        removetoFeauture.Enabled = true;

    }

  }

我尝试了类似上面的内容，但它没有将对象引用设置为实例错误。

Answer 1

  void DataListProduct_ItemDataBound(object sender, System.Web.UI.WebControls.DataListItemEventArgs e)
     {
         if (e.Item.ItemType == ListItemType.Item ||
             e.Item.ItemType == ListItemType.AlternatingItem)
         {

             Button BT = e.Item.FindControl(“ButtonID“) as Button;
             BT.Enable = True or false depends upon your condition
         }

     }

Answer 2

您需要使用Datalist的ItemDatabound事件

protected void DataList1_ItemDataBound(object sender, DataListItemEventArgs e)
{
 if ((e.Item.ItemType == ListItemType.Item) || (e.Item.ItemType == ListItemType.AlternatingItem))
    {
        DataRow dr = ((DataRowView)e.Item.DataItem).Row;
        if (Convert.ToBoolean(dr["StateColumnName"])
        {
          ((Button)e.Item.FindControl("Button1")).Enable = True;
        }
    }
}

如何在datalist中启用禁用按钮

2 个答案: