知识大全让UserControl 成为 Asp.Net ajax

Posted 2022-07-18 知

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　　很多时候我们需要用到User Control 将部份UI或业务逻辑包装下面将UserControl包装成Asp Net ajax 控件:简单示例:(ASCX) 这一段代码就不解释了:

　　 <table> <tr> <td> Login Name: td> <td> <asp:TextBox ID= UserName Ruant= Server >asp:TextBox> td> tr> <tr> <td> Password: td> <td> <asp:TextBox ID= Password TextMode= Password Ruant= Server >asp:TextBox> td> tr> table>

　　(LoginPanel js)

　　 <script type= text/javascript > /// Type registerNamespace( CsharpFarmer ); CsharpFarmer LoginPanel= function(element) CsharpFarmer LoginPanel initializeBase(this [element]); this userName = null; this password = null; CsharpFarmer LoginPanel prototype = initialize: function() CsharpFarmer LoginPanel callBaseMethod(this initialize ); // Add custom initialization here get_userName: function() return this userName ; set_userName: function(value) this userName = value; get_password: function() return this password ; set_password: function(value) this password = value; dispose: function() //Add custom dispose actions here CsharpFarmer LoginPanel callBaseMethod(this dispose ); delete this userName; delete this password; CsharpFarmer LoginPanel registerClass(CsharpFarmer LoginPanel Sys UI Control); </script>

　　(控件相对应的js 注意get和set方法必须成对出现与属性以 _ 隔开 ) 至于为什么只是一种规定查看MsAjax:中:Sys$Component$_setProperties:

　　Codefunction Sys$Component$_setProperties(target properties) /// /// /// var e = Function _validateParams(arguments [ name: target name: properties ]); if (e) throw e; var current; var targetType = Object getType(target); var isObject = (targetType === Object) || (targetType === Sys UI DomElement); var isComponent = Sys Component isInstanceOfType(target) && !target get_isUpdating(); if (isComponent) target beginUpdate(); for (var name in properties) var val = properties[name]; var getter = isObject ? null : target[ get_ + name]; if (isObject || typeof(getter) !== function ) var targetVal = target[name]; if (!isObject && typeof(targetVal) === undefined ) throw Error invalidOperation(String format(Sys Res propertyUndefined name)); if (!val || (typeof(val) !== object ) || (isObject && !targetVal)) target[name] = val; else Sys$Component$_setProperties(targetVal val); else var setter = target[ set_ + name]; if (typeof(setter) === function ) setter apply(target [val]); else if (val instanceof Array) current = getter apply(target); if (!(current instanceof Array)) throw new Error invalidOperation(String format(Sys Res propertyNotAnArray name)); for (var i = j = current length l= val length; i < l; i++ j++) current[j] = val[i]; else if ((typeof(val) === object ) && (Object getType(val) === Object)) current = getter apply(target); if ((typeof(current) === undefined ) || (current === null)) throw new Error invalidOperation(String format(Sys Res propertyNullOrUndefined name)); Sys$Component$_setProperties(current val); else throw new Error invalidOperation(String format(Sys Res propertyNotWritable name)); if (isComponent) target endUpdate();

　　LoginPanel cs

　　 using System; using System Collections Generic; using System Linq; using System Web; using System Web UI; using System Web UI WebControls; using System Text; /// /// LoginPanel /// public partial class LoginPanel : System Web UI UserControl IScriptControl protected void Page_Load(object sender EventArgs e) protected override void Render(HtmlTextWriter writer) writer AddAttribute(HtmlTextWriterAttribute Id this ClientID); writer RenderBeginTag( Div ); base Render(writer); writer RenderEndTag(); protected override void OnPreRender(EventArgs e) base OnPreRender(e); var sm = ScriptManager GetCurrent(this Page); sm RegisterScriptControl<LoginPanel>(this); sm RegisterScriptDescriptors(this); #region IScriptControl public IEnumerable<ScriptDescriptor> GetScriptDescriptors() var descriptor = new ScriptControlDescriptor( CsharpFarmer LoginPanel this ClientID); descriptor AddElementProperty( userName UserName ClientID); descriptor AddElementProperty( password Password ClientID); yield return descriptor; public IEnumerable<ScriptReference> GetScriptReferences() var sr = new ScriptReference( ~/LoginPanel js ); yield return sr; #endregion 这一段代码中应当注意

cha138/Article/program/net/201311/11389

知识大全 让UserControl 成为 Asp.Net ajax

知识大全让UserControl 成为 Asp.Net ajax