在用戶控件中,我在UpdatePanel中有一個Repeater(這個id顯示在ModalPopupExtender中,Repeater是使用MyDTO對象的數組列表的數據綁定。每個項目在列表中。綁定後ImageURL和CommandArgument被設置。UpdatePanel,Repeater,DataBinding問題
這段代碼第一次正常工作,但CommandArgument之後是錯誤的。看起來好像顯示更新正確,但DTO不是, CommandArgument發送的是剛剛被刪除的那個。
任何人都可以發現任何代碼問題嗎?
編輯:我剛剛添加了一個CollapsiblePanelExtender代碼。當我現在刪除一個項目並展開面板時,先前刪除(並從顯示屏中刪除)的項目已經回來。似乎直升機在發動機罩下沒有被正確地重建。
ASCX
<asp:UpdatePanel ID="ViewDataDetail" runat="server" ChildrenAsTriggers="true">
<Triggers>
<asp:PostBackTrigger ControlID="ViewDataCloseButton" />
<asp:AsyncPostBackTrigger ControlID="DataRepeater" />
</Triggers>
<ContentTemplate>
<table width="100%" id="DataResults">
<asp:Repeater ID="DataRepeater" runat="server" OnItemCommand="DataRepeater_ItemCommand" OnItemDataBound="DataRepeater_ItemDataBound">
<HeaderTemplate>
<tr>
<th><b>Name</b></th>
<th><b> </b></th>
</tr>
</HeaderTemplate>
<ItemTemplate>
<tr>
<td>
<b><%#((MyDTO)Container.DataItem).Name%></b>
</td>
<td>
<asp:ImageButton CausesValidation="false" ID="DeleteData" CommandName="Delete" runat="server" />
<asp:ImageButton CausesValidation="false" ID="RunData" CommandName="Run" runat="server" />
</td>
</tr>
<tr>
<td colspan="2">
<table>
<tr>
<td>Description : </td>
<td><%#((MyDTO)Container.DataItem).Description%></td>
</tr>
<tr>
<td>Search Text : </td>
<td><%#((MyDTO)Container.DataItem).Text%></td>
</tr>
</table>
</td>
</tr>
</ItemTemplate>
</asp:Repeater>
</table>
</ContentTemplate>
</asp:UpdatePanel>
代碼隱藏
public DeleteData DeleteDataDelegate;
public RetrieveData PopulateDataDelegate;
public delegate ArrayList RetrieveData();
public delegate void DeleteData(String sData);
protected void Page_Load(object sender, EventArgs e)
{
//load the initial data..
if (!Page.IsPostBack)
{
if (PopulateDataDelegate != null)
{
this.DataRepeater.DataSource = this.PopulateDataDelegate();
this.DataRepeater.DataBind();
}
}
}
protected void DataRepeater_ItemCommand(object source, RepeaterCommandEventArgs e)
{
if (e.CommandName == "Delete")
{
if (DeleteDataDelegate != null)
{
DeleteDataDelegate((String)e.CommandArgument);
BindDataToRepeater();
}
}
else if (e.CommandName == "Run")
{
String sRunning = (String)e.CommandArgument;
this.ViewDataModalPopupExtender.Hide();
}
}
protected void DataRepeater_ItemDataBound(object source, RepeaterItemEventArgs e)
{
RepeaterItem item = e.Item;
if (item != null && item.DataItem != null)
{
MyDTO oQuery = (MyDTO)item.DataItem;
ImageButton oDeleteControl = (ImageButton) item.FindControl("DeleteData");
ImageButton oRunControl = (ImageButton)item.FindControl("RunData");
if (oDeleteControl != null && oRunControl !=null)
{
oRunControl.ImageUrl = "button_expand.gif";
oRunControl.CommandArgument = "MyID";
if (oQuery !=null)
{
//do something
}
oDeleteControl.ImageUrl = "btn_remove.gif";
oDeleteControl.CommandArgument = "MyID";
}
}
}
public void BindDataToRepeater()
{
this.DataRepeater.DataSource = this.PopulateDataDelegate();
this.DataRepeater.DataBind();
}
public void ShowModal(object sender, EventArgs e)
{
BindDataToRepeater();
this.ViewDataModalPopupExtender.Show();
}
您的'ItemDataBound'處理程序中是否缺少代碼?在該方法內部,你聲明一個'MyDTO'變量('oQuery'),然後永遠不要使用它。 – 2010-06-09 18:29:09
對不起,是的,爲了簡潔,我將它縮小了 – 2010-06-09 18:45:54