我有以下UserControl工作得很好，但是当我发布项目时，我遇到了这个错误。
.. is not allowed here because it does not extend class 'System.Web.UI.UserControl'
如何解决？
ASCX
<%@ Control Language="C#" AutoEventWireup="true" CodeBehind="DataPagerGridView.ascx.cs" Inherits="VerInformes.DataPagerGridView" %>
C＃
public partial class DataPagerGridView : GridView, IPageableItemContainer
{
private static readonly object EventTotalRowCountAvailable = new object();
public int MaximumRows
{
get { return this.PageSize; }
}
public int StartRowIndex
{
get { return this.PageSize * this.PageIndex; }
}
public event EventHandler<PageEventArgs> TotalRowCountAvailable
{
add { base.Events.AddHandler(DataPagerGridView.EventTotalRowCountAvailable, value); }
remove { base.Events.RemoveHandler(DataPagerGridView.EventTotalRowCountAvailable, value); }
}
public void SetPageProperties(int startRowIndex, int maximumRows, bool databind)
{
int newPageIndex = (startRowIndex / maximumRows);
this.PageSize = maximumRows;
if (this.PageIndex != newPageIndex)
{
bool isCanceled = false;
if (databind)
{
// create the event arguments and raise the event
GridViewPageEventArgs args = new GridViewPageEventArgs(newPageIndex);
this.OnPageIndexChanging(args);
isCanceled = args.Cancel;
newPageIndex = args.NewPageIndex;
}
// if the event wasn't cancelled change the paging values
if (!isCanceled)
{
this.PageIndex = newPageIndex;
if (databind)
this.OnPageIndexChanged(EventArgs.Empty);
}
if (databind)
this.RequiresDataBinding = true;
}
}
protected virtual void OnTotalRowCountAvailable(PageEventArgs e)
{
EventHandler<PageEventArgs> handler = (EventHandler<PageEventArgs>)base.Events[DataPagerGridView.EventTotalRowCountAvailable];
if (handler != null)
{
handler(this, e);
}
}
protected override int CreateChildControls(IEnumerable dataSource, bool dataBinding)
{
int rows = base.CreateChildControls(dataSource, dataBinding);
// if the paging feature is enabled, determine the total number of rows in the datasource
if (this.AllowPaging)
{
// if we are databinding, use the number of rows that were created,
// otherwise cast the datasource to an Collection and use that as the count
int totalRowCount = dataBinding ? rows : ((ICollection)dataSource).Count;
// raise the row count available event
IPageableItemContainer pageableItemContainer = this as IPageableItemContainer;
this.OnTotalRowCountAvailable(new PageEventArgs
(pageableItemContainer.StartRowIndex, pageableItemContainer.MaximumRows, totalRowCount));
// make sure the top and bottom pager rows are not visible
if (this.TopPagerRow != null)
this.TopPagerRow.Visible = false;
if (this.BottomPagerRow != null)
this.BottomPagerRow.Visible = false;
}
return rows;
}
protected void Page_Load(object sender, EventArgs e)
{
}
}
答案 0 :(得分：0)
我刚刚重组了代码，现在它是正确的。
public class MyDataPagerGridView : GridView, IPageableItemContainer
{
private static readonly object EventTotalRowCountAvailable = new object();
public int MaximumRows
{
get { return this.PageSize; }
}
public int StartRowIndex
{
get { return this.PageSize * this.PageIndex; }
}
public event EventHandler<PageEventArgs> TotalRowCountAvailable
{
add { base.Events.AddHandler(MyDataPagerGridView.EventTotalRowCountAvailable, value); }
remove { base.Events.RemoveHandler(MyDataPagerGridView.EventTotalRowCountAvailable, value); }
}
public void SetPageProperties(int startRowIndex, int maximumRows, bool databind)
{
int newPageIndex = (startRowIndex / maximumRows);
this.PageSize = maximumRows;
if (this.PageIndex != newPageIndex)
{
bool isCanceled = false;
if (databind)
{
// create the event arguments and raise the event
GridViewPageEventArgs args = new GridViewPageEventArgs(newPageIndex);
this.OnPageIndexChanging(args);
isCanceled = args.Cancel;
newPageIndex = args.NewPageIndex;
}
// if the event wasn't cancelled change the paging values
if (!isCanceled)
{
this.PageIndex = newPageIndex;
if (databind)
this.OnPageIndexChanged(EventArgs.Empty);
}
if (databind)
this.RequiresDataBinding = true;
}
}
protected virtual void OnTotalRowCountAvailable(PageEventArgs e)
{
EventHandler<PageEventArgs> handler = (EventHandler<PageEventArgs>)base.Events[MyDataPagerGridView.EventTotalRowCountAvailable];
if (handler != null)
{
handler(this, e);
}
}
protected override int CreateChildControls(IEnumerable dataSource, bool dataBinding)
{
int rows = base.CreateChildControls(dataSource, dataBinding);
// if the paging feature is enabled, determine the total number of rows in the datasource
if (this.AllowPaging)
{
// if we are databinding, use the number of rows that were created,
// otherwise cast the datasource to an Collection and use that as the count
int totalRowCount = dataBinding ? rows : ((ICollection)dataSource).Count;
// raise the row count available event
IPageableItemContainer pageableItemContainer = this as IPageableItemContainer;
this.OnTotalRowCountAvailable(new PageEventArgs
(pageableItemContainer.StartRowIndex, pageableItemContainer.MaximumRows, totalRowCount));
// make sure the top and bottom pager rows are not visible
if (this.TopPagerRow != null)
this.TopPagerRow.Visible = false;
if (this.BottomPagerRow != null)
this.BottomPagerRow.Visible = false;
}
return rows;
}
}
public partial class DataPagerGridView : UserControl
{
public MyDataPagerGridView DataPagerGrid = new MyDataPagerGridView();
protected void Page_Load(object sender, EventArgs e)
{
}
}