删除后不会更新ListView [英] ListView is not updated after delete

问题描述

在asp.net应用程序中，我有一个问题，从列表视图中删除一行后，列表视图未更新，列表视图位于updatepanel中，但是没有任何问题.

我的代码是
受保护的void lstExchangeHistoryView_ItemCommand(对象发送者，ListViewCommandEventArgs e)
{

如果(e.Item.ItemType == ListViewItemType.DataItem)
{
标签lblRateHistoryID =(Label)e.Item.FindControl("lblRateHistoryID");



int _RateHistoryID = Convert.ToInt32(lblRateHistoryID.Text);
开关(e.CommandName)
{

案例删除":
{
_OperationMode =删除";
ExchangeHistory objExchangeHistory =新的ExchangeHistory();
if(_RateHistoryID！= 0)
{
objExchangeHistory.Delete(_RateHistoryID);




}
其他
{
ListViewDataItem dataItem =(ListViewDataItem)e.Item;
lstExchangeHistoryView.Items.Remove(dataItem);



}

Display();

UpdatePanel2.Update();
休息；
}
}

}

//btnRetrieve_Click(null，null);
}

In asp.net Application I Have a problem, after deleting a row from listview the listview is not updated ,the listview is in updatepanel,but in saving no problem.

My code is
protected void lstExchangeHistoryView_ItemCommand(object sender, ListViewCommandEventArgs e)
{

if (e.Item.ItemType == ListViewItemType.DataItem)
{
Label lblRateHistoryID = (Label)e.Item.FindControl("lblRateHistoryID");



int _RateHistoryID = Convert.ToInt32(lblRateHistoryID.Text);
switch (e.CommandName)
{

case "Delete":
{
_OperationMode = "Delete";
ExchangeHistory objExchangeHistory = new ExchangeHistory();
if(_RateHistoryID!=0)
{
objExchangeHistory.Delete(_RateHistoryID);




}
else
{
ListViewDataItem dataItem = (ListViewDataItem)e.Item;
lstExchangeHistoryView.Items.Remove(dataItem);



}

Display();

UpdatePanel2.Update();
break;
}
}

}

// btnRetrieve_Click(null, null);
}

推荐答案

您必须再次Bind 数据源，并且在删除后必须更新UpdatePanel，如果您的UpdatePanel ID是UpdatePanel1 而不是

Hi,

You have to Bind the data source again and you have to update the UpdatePanel after delete, If your UpdatePanel ID is UpdatePanel1 than,

//code for delete a row from listview
lstExchangeHistoryView.Datasource=YOUR_DATA_SOURCE;
lstExchangeHistoryView.DataBind();
UpdatePanel.Update(); 

listView1.Items.RemoveAt(0);

尝试执行此操作，因为在使用listview时无需使用listView1.refresh();.没有任何意义，因为添加或删除它会自动更新列表框.

listView1.Items.RemoveAt(0);

try doing this because when you are using listview no need to use listView1.refresh(); has no meaning as on adding or deleting it automatically updates the listbox.

这篇关于删除后不会更新ListView的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！