最近有用到一个功能、在客户端获取用户选中行的某字段值，默认的方法会导致页面回传(AJAX)刷新，效率比较低，于是搜索一番，拿到下面这个demo代码，经测试效果很好，公布在这里供有需要的朋友使用。
页面代码：
[HTML] 纯文本查看 复制代码 <%-- BeginRegion --%>
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="Data_Bind_Control_PassDataOnClient" %>
<%@ Register Assembly="DevExpress.Web.v14.1"
Namespace="DevExpress.Web.ASPxEditors" TagPrefix="dxe" %>
<%@ Register Assembly="DevExpress.Web.v14.1"
Namespace="DevExpress.Web.ASPxGridView" TagPrefix="dxwgv" %>
<%@ Register Assembly="DevExpress.Web.v14.1" Namespace="DevExpress.Web.ASPxEditors" TagPrefix="dxe" %>
<%@ Register Assembly="DevExpress.Web.v14.1" Namespace="DevExpress.Web.ASPxGridView" TagPrefix="dxwgv" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<%-- EndRegion --%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>Data caching on the client</title>
<script type="text/javascript">
function ProcessRow(index) {
alert("The row id is '" + grid.cpTitleId[index - grid.visibleStartIndex] + "', and title is " + grid.cpTitles[index - grid.visibleStartIndex]);
}
</script>
</head>
<body>
<form id="form1" runat="server">
<asp:AccessDataSource ID="AccessDataSource1" runat="server" DataFile="~/App_Data/pubs.mdb"
SelectCommand="SELECT [title_id], [title], [type], [pubdate], [price] FROM [titles]">
</asp:AccessDataSource>
<dxwgv:aspxgridview id="grid" runat="server" width="950px" AutoGenerateColumns="False"
DataSourceID="AccessDataSource1" KeyFieldName="title_id"
OnCustomJSProperties="grid_CustomJSProperties">
<settingsbehavior allowfocusedrow="True" allowselectbyrowclick="True" />
<SettingsPager PageSize="5" />
<%-- BeginRegion Columns --%>
<clientsideevents focusedrowchanged="function(s, e) {
alert("The row id is '" + grid.cpTitleId[grid.GetFocusedRowIndex()] + "', and title is " + grid.cpTitles[grid.GetFocusedRowIndex()]);
}" />
<Columns>
<dxwgv:GridViewDataTextColumn Caption="title_id" FieldName="title_id" ReadOnly="True"
VisibleIndex="1">
</dxwgv:GridViewDataTextColumn>
<dxwgv:GridViewDataTextColumn Caption="title" FieldName="title" VisibleIndex="2">
</dxwgv:GridViewDataTextColumn>
<dxwgv:GridViewDataTextColumn Caption="type" FieldName="type" VisibleIndex="3">
</dxwgv:GridViewDataTextColumn>
<dxwgv:GridViewDataDateColumn Caption="pubdate" FieldName="pubdate" VisibleIndex="4">
</dxwgv:GridViewDataDateColumn>
<dxwgv:GridViewDataTextColumn Caption="price" FieldName="price" VisibleIndex="5">
</dxwgv:GridViewDataTextColumn>
<dxwgv:GridViewDataTextColumn Caption="button" VisibleIndex="6">
<DataItemTemplate>
<input type="button" value="Click Me" />
</DataItemTemplate>
</dxwgv:GridViewDataTextColumn>
</Columns>
<%-- EndRegion --%>
</dxwgv:aspxgridview>
</form>
</body>
</html>
C#代码：
[C#] 纯文本查看 复制代码 using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using DevExpress.Web.ASPxTabControl;
using System.Drawing;
using DevExpress.Web.ASPxGridView;
using DevExpress.Web.ASPxEditors;
using System.Collections.Generic;
using DevExpress.Data;
public partial class Data_Bind_Control_PassDataOnClient : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void grid_CustomJSProperties(object sender, ASPxGridViewClientJSPropertiesEventArgs e) {
int startIndex = grid.PageIndex * grid.SettingsPager.PageSize;
int end = Math.Min(grid.VisibleRowCount, startIndex + grid.SettingsPager.PageSize);
object[] titleId = new object[end - startIndex], titles = new object[end - startIndex];
for(int n = startIndex; n < end; n++) {
titleId[n - startIndex] = grid.GetRowValues(n, "title_id");
titles[n - startIndex] = grid.GetRowValues(n, "title");
}
e.Properties["cpTitleId"] = titleId;
e.Properties["cpTitles"] = titles;
}
}
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发表于 2014-11-20 10:40:05