把生成图片的代码放在一个aspx页面中在PageLoad事件中把图片写入输出流
private void Page_Load(object sender SystemEventArgs e) {
string code = RequestParams[code];
Bitmap image = DrawImage(code);
ResponseContentType = image/gif;
imageSave(ResponseOutputStreamSystemDrawingImagingImageFormatGif);
ResponseEnd();
}
在需要引用图片的地方设定图片URL为生成图片的aspx页面
ImageCodeImageUrl = CodeImageaspx?code=+code;
使用SystemWebHttpContextCurrent来实现一些页面中常用的方法比如
public class WebApp{
public static void ShowMessage(string message){
HttpContextCurrentResponseWrite (<script language=javascript>alert(+message+)</script>);
}
public static string CurrentUser{
get{
return HttpContextCurrentSession[UserID]+;
}
}
}
在自定义的Web控件中把Javascript脚本文件编译为内嵌的资源然后从资源中读取脚本并注册
public class Res {
public static StreamReader GetStream(Type typestring name){
//Assembly assembly = AssemblyGetAssembly(type);
Assembly assembly = typeAssembly;
Stream stream = assemblyGetManifestResourceStream(typename);
return new StreamReader(stream);
}
}
public class ScriptControl : Control {
/// <summary>
/// Register Client Script Block
/// </summary>
/// <param name=control>custom web control</param>
/// <param name=scriptfile>resource script file name</param>
public void RegisterScript(string scriptfile){
if (!thisPageIsClientScriptBlockRegistered(scriptfile)) {
StreamReader reader = ResGetStream(thisGetType()scriptfile);
using(reader){
string script
= <script language=\javascript\ type=\text/javascript\> <!
+ readerReadToEnd()
+ //> </script>;
thisPageRegisterClientScriptBlock(scriptfile script);
}
}
}
}
[DefaultProperty(Text)
ToolboxData(<{}:ShowDialogListBox runat=server></{}:ShowDialogListBox>)]
public class ShowDialogListBox : ScriptControl {
protected override void OnInit(EventArgs e) {
thisRegisterScript(EnDeListBoxjs);
}
}
在nfig文件中定义默认的页面继承类型
