如何启用数据列表中的禁用按钮

发布于 2024-11-06 08:53:07 字数 679 浏览 3 评论 0原文

我有一个数据列表，其中包含一些带有 2 个按钮的数据绑定字段。我想根据每行的列（状态）值启用禁用按钮，因此例如，如果状态的值为 0 ，则应禁用删除按钮，而当状态值为 1 时，应类似地启用添加按钮，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;

    }

  }

我尝试过类似上面的方法，但它给出了对象引用未设置为实例错误。

原文

I have got a datalist with some databound fields with 2 buttons. I want to enable disable button depending on the column(state) value of each row, so for instance if the value of state is 0 , the remove button should be disable and add button should be enabled similarly when the value of state is 1 , vice versa..

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;

    }

  }

I have tried something like above but it gives object reference not set to an instance error.

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情感失落者 2024-11-13 08:53:07

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;
        }
    }
}

You need to use ItemDatabound event of Datalist

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;
        }
    }
}

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戈亓 2024-11-13 08:53:07

  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
         }

     }

  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
         }

     }

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~没有更多了~