想自己重新写个控件，修改一下现有的gridview控件，该怎么处理？
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public class CustomList : DataList {
//Static constants
protected const string HTML1 = "<table cellpadding=0 cellspacing=0><tr><td colspan=2>";
protected const string HTML2 = "</td></tr><tr><td class=paging align=left>";
protected const string HTML3 = "</td><td align=right class=paging>";
protected const string HTML4 = "</td></tr></table>";
private static readonly Regex RX = new Regex(@"^&page=\d+", RegexOptions.Compiled);
private const string LINK_PREV = "<a href=?page={0}>< Previous</a>";
private const string LINK_MORE = "<a href=?page={0}>More ></a>";
private const string KEY_PAGE = "page";
private const string COMMA = "?";
private const string AMP = "&"; protected string emptyText;
private IList dataSource;
private int pageSize = 10;
private int currentPageIndex;
private int itemCount; override public object DataSource {
set {
//This try catch block is to avoid issues with the VS.NET designer
//The designer will try and bind a datasource which does not derive from ILIST
try {
dataSource = (IList)value;
ItemCount = dataSource.Count;
}
catch {
dataSource = null;
ItemCount = 0;
}
}
} public int PageSize {
get { return pageSize; }
set { pageSize = value; }
} protected int PageCount {
get { return (ItemCount - 1) / pageSize; }
} virtual protected int ItemCount {
get { return itemCount; }
set { itemCount = value; }
} virtual public int CurrentPageIndex {
get { return currentPageIndex; }
set { currentPageIndex = value; }
} public string EmptyText {
set { emptyText = value; }
} public void SetPage(int index) {
OnPageIndexChanged(new DataGridPageChangedEventArgs(null, index));
} override protected void OnLoad(EventArgs e) {
if (Visible) {
string page = Context.Request[KEY_PAGE];
int index = (page != null) ? int.Parse(page) : 0;
SetPage(index);
}
}
/// <summary>
/// Overriden method to control how the page is rendered
/// </summary>
/// <param name="writer"></param>
override protected void Render(HtmlTextWriter writer) { //Check there is some data attached
if (ItemCount == 0) {
writer.Write(emptyText);
return;
} //Mask the query
string query = Context.Request.Url.Query.Replace(COMMA, AMP);
query = RX.Replace(query, string.Empty);
// Write out the first part of the control, the table header
writer.Write(HTML1); // Call the inherited method
base.Render(writer);
// Write out a table row closure
writer.Write(HTML2); //Determin whether next and previous buttons are required
//Previous button?
if (currentPageIndex > 0)
writer.Write(string.Format(LINK_PREV, (currentPageIndex - 1) + query)); //Close the table data tag
writer.Write(HTML3); //Next button?
if (currentPageIndex < PageCount)
writer.Write(string.Format(LINK_MORE, (currentPageIndex + 1) + query)); //Close the table
writer.Write(HTML4);
} override protected void OnDataBinding(EventArgs e) { //Work out which items we want to render to the page
int start = CurrentPageIndex * pageSize;
int size = Math.Min(pageSize, ItemCount - start); IList page = new ArrayList(); //Add the relevant items from the datasource
for (int i = 0; i < size; i++)
page.Add(dataSource[start + i]); //set the base objects datasource
base.DataSource = page;
base.OnDataBinding(e); } public event DataGridPageChangedEventHandler PageIndexChanged; virtual protected void OnPageIndexChanged(DataGridPageChangedEventArgs e) {
if (PageIndexChanged != null)
PageIndexChanged(this, e);
}
}
public static void ShowPageInfo(int curpg,int pagesize,string pagename,string headername,string footername, ref DataView dv,ref Repeater List,bool IsForm)
{
int curpage,pages,sum,n,i;
string headermsg,footermsg,firstmsg,lastmsg,backmsg,forwardmsg;
HtmlTableCell tdh=null,tdf=null;
sum=dv.Count;
curpage=curpg;
pages=sum/pagesize;
if(sum%pagesize!=0)pages++;
if(curpage>pages)curpage=pages;
else if(curpage<1)curpage=1;
n=pagesize*(curpage-1);
for(i=0;i<n;i++)dv.Delete(0);
while(dv.Count>pagesize)dv.Delete(dv.Count-1);
List.DataSource=dv;
List.DataBind();
if(!(headername==""||headername==null))tdh=(HtmlTableCell)List.Controls[0].FindControl(headername);
if(!(footername==""||footername==null))tdf=(HtmlTableCell)List.Controls[List.Controls.Count-1].FindControl(footername);
headermsg="总记录: <font color='#FF0000'>"+sum.ToString()+"</font> 每页:  <font color='#FF0000'>"+pagesize.ToString()+"</font> 总页数: <font color='#FF0000'>"+pages.ToString()+"</font> ";
if(!IsForm)
{
if(pages>1&&curpage>1)firstmsg="<a href=\'"+pagename+"?CurPage=1\'>首页</a> ";
else firstmsg="第一页 ";
if(pages>1&&curpage<pages)lastmsg="<a href=\'"+pagename+"?CurPage="+pages.ToString()+"\'>最后页</a> ";
else lastmsg="尾页 ";
if(curpage>1)backmsg="<a href=\'"+pagename+"?CurPage="+(curpage-1).ToString()+"\'>上一页</a> ";
else backmsg="上一页 ";
if(curpage<pages)forwardmsg="<a href=\'"+pagename+"?CurPage="+(curpage+1).ToString()+"\'>下一页</a> ";
else forwardmsg="下一页 ";
}
else
{
if(pages>1&&curpage>1)firstmsg="<a OnClick=\'JavaScript:SendPage(\"1\");\'>首页</a> ";
else firstmsg="首页 ";
if(pages>1&&curpage<pages)lastmsg="<a OnClick=\'JavaScript:SendPage(\""+pages.ToString()+"\");\'>尾页</a> ";
else lastmsg="尾页 ";
if(curpage>1)backmsg="<a OnClick=\'JavaScript:SendPage(\""+(curpage-1).ToString()+"\");\'>上一页</a> ";
else backmsg="上一页 ";
if(curpage<pages)forwardmsg="<a OnClick=\'JavaScript:SendPage(\""+(curpage+1).ToString()+"\");\'>下一页</a> ";
else forwardmsg="下一页 ";
}
footermsg="当前页: <font color='#FF0000'>"+curpage.ToString()+"</font>";
if(tdh!=null)tdh.InnerHtml=" "+headermsg+firstmsg+backmsg+forwardmsg+lastmsg+footermsg+" ";
if(tdf!=null)tdf.InnerHtml=" "+headermsg+firstmsg+backmsg+forwardmsg+lastmsg+footermsg+" ";
return;
}
我写了这句：
public class WebGridView:GridView
{
...
}
就已经出错了，说找不到gridview
using System.ComponentModel;