ExtAspNet GridPanel的一般用法

<ext:grid id="gridecuser" runat="server" enablecheckboxselect="false" enablerownumber="true"
title="用户管理" allowpaging="true"
onpageindexchange="gridecuser_pageindexchange" pagesize="10"
onrowdatabound="gridecuser_rowdatabound" datakeynames="userid">
<toolbars>
<ext:toolbar id="toolbar1" runat="server">
<items>
<ext:button id="btnaddecuser" runat="server" text="添加" icon="add">
</ext:button>
<ext:toolbarseparator id="toolbarseparator1" runat="server">
</ext:toolbarseparator>
<ext:button id="btntohome" runat="server" text="首页" onclick="btntohome_click" icon="house">
</ext:button>
</items>
</ext:toolbar>
</toolbars>
<columns>
<ext:boundfield headertext="用户id" width="50px" hidden="true" datafield="userid" columnid="userid" />
<ext:boundfield headertext="姓名" width="150px" expandunusedspace="true" datafield="fullname" columnid="fullname" />
<ext:boundfield headertext="登陆用户名" width="150px" datafield="loginname" columnid="loginname" />
<ext:boundfield headertext="用户组" width="150px" columnid="rolesfullname" datafield="rolesfullname" />
<ext:checkboxfield headertext="用户状态" width="80px" columnid="isopen" datafield="isopen" />
<ext:linkbuttonfield headertext="" width="60px" columnid="modiuser" text="修改" commandname="modi" />
<ext:linkbuttonfield headertext="" width="60px" columnid="deluser" text="删除" commandname="del" confirmicon="question" confirmtext="确认要删除用户吗？" confirmtitle="易彩国际" />
</columns>
</ext:grid>

//数据绑定：
//说明：列的datafield名称要与datatable中的字段名称一致。
datatable userdt = userbll.getecuserlist();
gridecuser.datasource = userdt;
gridecuser.databind();

　　　　protected void gridecuser_rowdatabound(object sender, extaspnet.gridroweventargs e)
{
datarow dr = e.dataitem as datarow;
if (dr != null)
{
bool isopen = convert.toboolean(dr["isopen"]);
if (isopen) e.values[4] = "<img src='../images/png-0010.png' style='width:16px;text-align:center'";
else e.values[4] = "<img src='../images/png-0012.png' style='width:16px;'";
}

<ext:boundfield headertext="姓名" width="150px" expandunusedspace="true" datafield="fullname" columnid="fullname" dataformatstring="<div style='text-align:center;width:100%'>{0}</div>" />

　　　　protected void gridecuser_rowcommand(object sender, extaspnet.gridcommandeventargs e)
{
if (e.commandname == "modi") //修改
{
string dd = gridecuser.datakeys[e.rowindex][0].tostring();
extaspnet.alert.show(dd);
}
else if (e.commandname == "del")//删除
{
}
}