伺服器控制項之使用者登入

using system;

using system.web.ui;

using system.web.ui.webcontrols;

using system.collections.specialized;

using system.***ponentmodel;

using system.drawing;

using system.globalization;

namespace webframe

remove

}public event eventhandler loginout

remove

}#endregion

#region 定義ipostbackdatahandler與ipostbackeventhandler的方法

bool ipostbackdatahandler.loadpostdata(string postdatakey,namevaluecollection values)

string buttonout = values[this.outbuttonname];

bool buttonoutclick = (buttonout!=null)&&(buttonout.length!=0);

if(buttonoutclick)

return false;

}void ipostbackdatahandler.raisepostdatachangedevent()

protected virtual void onlogin(eventargs e)

#endregion

#region 將控制項加入頁面時發生

protected override void onprerender(eventargs e)

#endregion

#region 定義控制項屬性

public virtual string userlabeltext

set}

public virtual string passwordlabeltext

set}

public string userinputid

}public string userinputname

}public string username

}public string passwordinputid

}public string passwordinputname

}public string password

}public string inbuttonid

}public string inbuttonname

}public virtual string inbuttontext

set

}public string outbuttonid

}public string outbuttonname

}public virtual string outbuttontext

set}

#endregion

#region 控制項輸出

protected override void render(htmltextwriter writer)

if(!bordercolor.isempty)

if((borderstyle != borderstyle.none) && (borderstyle != borderstyle.notset))

if(!borderwidth.isempty)

writer.addattribute(htmltextwriterattribute.border,"1");

writer.renderbegintag(htmltextwritertag.table);

writer.renderbegintag(htmltextwritertag.tr);

writer.renderbegintag(htmltextwritertag.td);

writer.write(this.userlabeltext);

writer.renderendtag();

writer.renderbegintag(htmltextwritertag.td);

writer.addattribute(htmltextwriterattribute.type,"text");

writer.addattribute(htmltextwriterattribute.id,this.userinputid);

writer.addattribute(htmltextwriterattribute.name,this.userinputname);

writer.addattribute(htmltextwriterattribute.value,string.empty);

writer.renderbegintag(htmltextwritertag.input);

writer.renderendtag();

writer.renderendtag();

writer.renderendtag();

writer.renderbegintag(htmltextwritertag.tr);

writer.renderbegintag(htmltextwritertag.td);

writer.write(this.passwordlabeltext);

writer.renderendtag();

writer.renderbegintag(htmltextwritertag.td);

writer.addattribute(htmltextwriterattribute.type,"password");

writer.addattribute(htmltextwriterattribute.id,this.passwordinputid);

writer.addattribute(htmltextwriterattribute.name,this.passwordinputname);

writer.addattribute(htmltextwriterattribute.value,string.empty);

writer.renderbegintag(htmltextwritertag.input);

writer.renderendtag();

writer.renderendtag();

writer.renderendtag();

writer.renderbegintag(htmltextwritertag.tr);

writer.renderbegintag(htmltextwritertag.td);

writer.addattribute(htmltextwriterattribute.type,"submit");

writer.addattribute(htmltextwriterattribute.id,this.inbuttonid);

writer.addattribute(htmltextwriterattribute.name,this.inbuttonname);

writer.addattribute(htmltextwriterattribute.value,this.inbuttontext);

writer.renderbegintag(htmltextwritertag.input);

writer.renderendtag();

writer.renderbegintag(htmltextwritertag.td);

writer.addattribute(htmltextwriterattribute.type,"submit");

writer.addattribute(htmltextwriterattribute.id,this.outbuttonid);

writer.addattribute(htmltextwriterattribute.name,this.outbuttonname);

writer.addattribute(htmltextwriterattribute.value,this.outbuttontext);

writer.renderbegintag(htmltextwritertag.input);

writer.renderendtag();

writer.renderendtag();

writer.renderendtag();

}#endregion}}

將以上**編譯成元件後拖拉至設計頁面login.aspx

login.aspx檔案 ：

<%@ page language="c#" codebehind="login.aspx.cs" autoeventwireup="false" inherits="play.webform1" %>

<%@ register tagprefix="loginon" namespace="webframe" assembly="webframe"%>

後**檔案login.aspx.cs：

this.aaa.loginin += new system.eventhandler(this.aaa_loginin);

this.aaa.loginout += new system.eventhandler(this.aaa_loginout);

private void aaa_loginin(object sender ,system.eventargs e)

private void aaa_loginout(object sender, system.eventargs e)

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