控件的代码如下:
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using System;
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using System.Collections;
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using System.ComponentModel;
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using System.Drawing;
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using System.Data;
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using System.Windows.Forms;
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using WGSys.DataExchange;
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using WGSys.DataExchange.WGService;
9![](/Images/OutliningIndicators/None.gif)
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namespace WGSys.WGCtrlLib
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{
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/// <summary>
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/// Summary description for CtrlPrint.
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/// </summary>
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public class CtrlPrint : System.Windows.Forms.UserControl
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{
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/// <summary>
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/// Required designer variable.
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/// </summary>
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private System.ComponentModel.Container components = null;
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private System.Windows.Forms.Label label1;
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WGSys.DataExchange.WGProxy svc = new WGSys.DataExchange.WGProxy();
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public CtrlPrint()
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{
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// This call is required by the Windows.Forms Form Designer.
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InitializeComponent();
27![](/Images/OutliningIndicators/InBlock.gif)
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// TODO: Add any initialization after the InitializeComponent call
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}
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private System.Drawing.Printing.PrintDocument printDoc;
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Component Designer generated code
63![](/Images/OutliningIndicators/InBlock.gif)
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变量销毁
80![](/Images/OutliningIndicators/InBlock.gif)
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判断是否安装打印机
140![](/Images/OutliningIndicators/InBlock.gif)
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测试控件
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}
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}
页面引用的代码如下![](/Images/OutliningIndicators/None.gif)
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![](/Images/OutliningIndicators/None.gif)
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![](/Images/OutliningIndicators/None.gif)
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![](/Images/OutliningIndicators/None.gif)
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![](/Images/OutliningIndicators/None.gif)
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![](/Images/OutliningIndicators/None.gif)
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![](/Images/OutliningIndicators/None.gif)
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![](/Images/OutliningIndicators/None.gif)
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![](/Images/OutliningIndicators/None.gif)
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![](/Images/OutliningIndicators/None.gif)
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![](/Images/OutliningIndicators/ExpandedBlockStart.gif)
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![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
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![](/Images/OutliningIndicators/InBlock.gif)
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![](/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
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![](/Images/OutliningIndicators/InBlock.gif)
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![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
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![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
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![](/Images/OutliningIndicators/InBlock.gif)
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![](/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
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![](/Images/OutliningIndicators/InBlock.gif)
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![](/Images/OutliningIndicators/InBlock.gif)
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![](/Images/OutliningIndicators/InBlock.gif)
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![](/Images/OutliningIndicators/InBlock.gif)
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![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
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![](/Images/OutliningIndicators/InBlock.gif)
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![](/Images/OutliningIndicators/InBlock.gif)
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![](/Images/OutliningIndicators/InBlock.gif)
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![](/Images/OutliningIndicators/InBlock.gif)
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![](/Images/OutliningIndicators/InBlock.gif)
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![](/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
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![](/Images/OutliningIndicators/InBlock.gif)
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![](/Images/OutliningIndicators/ContractedSubBlock.gif)
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![](/Images/OutliningIndicators/InBlock.gif)
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![](/Images/OutliningIndicators/ContractedSubBlock.gif)
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![](/Images/OutliningIndicators/InBlock.gif)
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![](/Images/OutliningIndicators/ContractedSubBlock.gif)
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![](/Images/OutliningIndicators/InBlock.gif)
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![](/Images/OutliningIndicators/InBlock.gif)
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![](/Images/OutliningIndicators/ContractedSubBlock.gif)
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![](/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
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![](/Images/OutliningIndicators/ExpandedBlockEnd.gif)
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<OBJECT id="CtrlPrint" style="WIDTH: 80px; HEIGHT: 50px" height="32" width="32"
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classid="http:../WGCtrlLib.dll#WGSys.WGCtrlLib.CtrlPrint" VIEWASTEXT>
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</OBJECT>
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<INPUT class="NormalButton" style="WIDTH: 80px; HEIGHT: 24px" onclick="test1();" type="button" value="测试1">
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<INPUT class="NormalButton" style="WIDTH: 80px; HEIGHT: 24px" onclick="test2();" type="button" value="测试2">
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<INPUT class="NormalButton" style="WIDTH: 80px; HEIGHT: 24px" onclick="test3();" type="button" value="测试3">
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<SCRIPT language="javascript">
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function test1()
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{
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try
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{
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alert(document.all["CtrlPrint"]);
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}
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catch(e)
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{
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alert(e.message);
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}
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}
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function test2()
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{
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if(document.all["CtrlPrint"]=="WGSys.WGCtrlLib.CtrlPrint")
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{
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try
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{
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document.all["CtrlPrint"].ShowHelp();
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}
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catch(e)
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{
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alert(e.message);
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}
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}
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else
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{
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alert("打印控件未能正确加载!");
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}
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}
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function test3()
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{
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if(document.all["CtrlPrint"]=="WGSys.WGCtrlLib.CtrlPrint")
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{
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try
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{
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document.all["CtrlPrint"].HavePaperType("A4");
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}
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catch(e)
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{
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alert(e.message);
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}
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}
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else
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{
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alert("打印控件未能正确加载!");
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}
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}
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</SCRIPT>
![](/Images/OutliningIndicators/None.gif)
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![](/Images/OutliningIndicators/None.gif)
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![](/Images/OutliningIndicators/None.gif)
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![](/Images/OutliningIndicators/None.gif)
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![](/Images/OutliningIndicators/None.gif)
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![](/Images/OutliningIndicators/None.gif)
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![](/Images/OutliningIndicators/ExpandedBlockStart.gif)
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![](/Images/OutliningIndicators/InBlock.gif)
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![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
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![](/Images/OutliningIndicators/InBlock.gif)
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![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
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![](/Images/OutliningIndicators/InBlock.gif)
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![](/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
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![](/Images/OutliningIndicators/InBlock.gif)
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![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
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![](/Images/OutliningIndicators/InBlock.gif)
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![](/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
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![](/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
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![](/Images/OutliningIndicators/InBlock.gif)
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![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
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![](/Images/OutliningIndicators/InBlock.gif)
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![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
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![](/Images/OutliningIndicators/InBlock.gif)
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![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
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![](/Images/OutliningIndicators/InBlock.gif)
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![](/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
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![](/Images/OutliningIndicators/InBlock.gif)
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![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
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![](/Images/OutliningIndicators/InBlock.gif)
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![](/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
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![](/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
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![](/Images/OutliningIndicators/InBlock.gif)
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![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
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![](/Images/OutliningIndicators/InBlock.gif)
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![](/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
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![](/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
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![](/Images/OutliningIndicators/InBlock.gif)
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![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
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![](/Images/OutliningIndicators/InBlock.gif)
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![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
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![](/Images/OutliningIndicators/InBlock.gif)
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![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
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![](/Images/OutliningIndicators/InBlock.gif)
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![](/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
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![](/Images/OutliningIndicators/InBlock.gif)
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![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
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![](/Images/OutliningIndicators/InBlock.gif)
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![](/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
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![](/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
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![](/Images/OutliningIndicators/InBlock.gif)
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![](/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
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![](/Images/OutliningIndicators/InBlock.gif)
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![](/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
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![](/Images/OutliningIndicators/ExpandedBlockEnd.gif)
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![](/Images/OutliningIndicators/None.gif)
这个程序正常情况下应该显示如图,点击“测试1”按钮后,弹出"WGSys.WGCtrlLib.CtrlPrint"
![](/images/cnblogs_com/wormday/WinControl/11.jpg)
错误1控件不能正确加载,控件状态如下图,访问控件的时候脚本错误“拒绝访问”
![](/images/cnblogs_com/wormday/WinControl/4.jpg)
这种情况往往是因为页面引用控件的位置不正确,比如本来应该是classid="http:../WGCtrlLib.dll#WGSys.WGCtrlLib.CtrlPrint"
却写成了classid="http:../WGCtrlLib2.dll#WGSys.WGCtrlLib.CtrlPrint",还有一种情况是Bin目录下边的Dll是不能直接引用的,所以这个控件不要放在bin下面,我是放在网站根目录下面的。
错误2控件加载,但是不能判断出具体类型,控件状态如下图
![](/images/cnblogs_com/wormday/WinControl/5.jpg)
在脚本中测试 alert(document.all["CtrlPrint"]);的时候提示[object],说明页面已经判断出来这个控件了,但是不知道具体类型
产生这个错误的原因可能是classid里边的名称控件不正确,比如写成了classid="http:../WGCtrlLib.dll#WGSys.WGCtrlLib.CtrlPrint2"还有一种情况比较奇怪,如果你用了客户机器里边不存在的字体,控件也是这种状态,比如我控件上显示OK的字体用"Arial Black",如果客户机器上没有这个字体,控件同样是这种状态,不能正常加载。估计是MS的Bug...
错误3 控件在页面上彻底的不显示,连空白的地方都没有留
原因是你用.Net 1.1写的控件,客户机器上装的是.Net 2.0 估计还是MS的Bug,应该向下兼容才对啊。
错误4 无法验证发行者。您确定要运行此软件吗?
![](/images/cnblogs_com/wormday/WinControl/7.jpg)
目前为止,只有一台机器每次加载控件的时候都提示这个错误。点击运行按钮后控件工作正常,但是很烦。
本来以为是Internet选项 -> 安全 -> 安全设置 里边的“运行未用Authenticode签名的组件”的设置问题,但是选择“启用”后仍然不起作用。并且选择“提示”后提示的窗口跟这个窗口是不同的。
提示的窗口应该如下
![](/images/cnblogs_com/wormday/WinControl/8.jpg)
这个问题还没有解决,谁有办法请指教。
错误5 控件可能加载正常,运行某些方法的时候控件抛出“请求****类型的权限已失败”的异常?
![](/images/cnblogs_com/wormday/WinControl/9.jpg)
这个可以到 管理工具->Microsoft .NET Framework 1.1 向导->调整.NET安全性 里边调节相应区域的安全级别