跨页面提交处理

1：Default页

default.aspx:

 

代码

   
     

    
      
    
       
    
      <
    
      div
    
      >
    
      
 Name:
 
    
      <
    
      asp:TextBox 
    
      ID
    
      ="TextBox1"
    
       runat
    
      ="server"
    
      ></
    
      asp:TextBox
    
      >
    
      
 
    
      <
    
      br 
    
      />
    
      
 
    
      <
    
      br 
    
      />
    
      
 Address:
 
    
      <
    
      asp:TextBox 
    
      ID
    
      ="TextBox2"
    
       runat
    
      ="server"
    
      ></
    
      asp:TextBox
    
      >
    
      
 
    
      <
    
      br 
    
      />
    
      
 
    
      <
    
      br 
    
      />
    
      
 City:
 
    
      <
    
      asp:TextBox 
    
      ID
    
      ="TextBox3"
    
       runat
    
      ="server"
    
      ></
    
      asp:TextBox
    
      >
    
      
 
    
      <
    
      br 
    
      />
    
      
 
    
      <
    
      br 
    
      />
    
      
 
    
      &nbsp;
    
      <
    
      asp:Button 
    
      ID
    
      ="Button1"
    
       runat
    
      ="server"
    
       Text
    
      ="Original Page"
    
       
    
      />
    
      
 
    
      &nbsp;
    
      <
    
      asp:Button 
    
      ID
    
      ="Button2"
    
       runat
    
      ="server"
    
       PostBackUrl
    
      ="~/Target.aspx"
    
       Text
    
      ="Target Page"
    
       
    
      />
    
      
 
    
      &nbsp;
    
      <
    
      asp:Button 
    
      ID
    
      ="Button3"
    
       runat
    
      ="server"
    
       PostBackUrl
    
      ="~/Target2.aspx"
    
       Text
    
      ="Target2 Page"
    
       
    
      />
    
      
 
    
      &nbsp;
    
      <
    
      asp:Button 
    
      ID
    
      ="Button4"
    
       runat
    
      ="server"
    
       Text
    
      ="Server Transfer Target"
    
       onclick
    
      ="Button4_Click"
    
       
    
      />
    
      
 
    
      <
    
      br 
    
      />
    
      
 
    
      <
    
      br 
    
      />
    
      
 
    
      <
    
      asp:Label 
    
      ID
    
      ="labName"
    
       runat
    
      ="server"
    
       Text
    
      ="Label"
    
      ></
    
      asp:Label
    
      >
    
      
 
    
      <
    
      br 
    
      />
    
      
 
    
      <
    
      asp:Label 
    
      ID
    
      ="labAddress"
    
       runat
    
      ="server"
    
       Text
    
      ="Label"
    
      ></
    
      asp:Label
    
      >
    
      
 
    
      <
    
      br 
    
      />
    
      
 
    
      <
    
      asp:Label 
    
      ID
    
      ="labCity"
    
       runat
    
      ="server"
    
       Text
    
      ="Label"
    
      ></
    
      asp:Label
    
      >
    
      
 
    
      <
    
      br 
    
      />
    
      
 
    
      </
    
      div
    
      >
   
     

 

default.aspx.cs

 

代码

   
     

    
      
    
       protected void Page_Load(object sender, EventArgs e)
 {
 //If post back then save data to label controls.
 if (IsPostBack)
 {
 SaveData();
 }
 }

 /// 
    
      <
    
      summary
    
      >
    
      
 /// Transfer data to label controls.
 /// 
    
      </
    
      summary
    
      >
    
      
 private void SaveData()
 {
 labName.Text = TextBox1.Text;
 labAddress.Text = TextBox2.Text;
 labCity.Text = TextBox3.Text;
 }

 /// 
    
      <
    
      summary
    
      >
    
      
 /// Public property for name textbox.
 /// 
    
      </
    
      summary
    
      >
    
      
 public string Name
 {
 get { return TextBox1.Text; }
 }

 /// 
    
      <
    
      summary
    
      >
    
      
 /// Public property for address textbox.
 /// 
    
      </
    
      summary
    
      >
    
      
 public string Address
 {
 get { return TextBox2.Text; }
 }

 /// 
    
      <
    
      summary
    
      >
    
      
 /// Public property for city textbox.
 /// 
    
      </
    
      summary
    
      >
    
      
 public string City
 {
 get { return TextBox3.Text; }
 }

 /// 
    
      <
    
      summary
    
      >
    
      
 /// Actions when Transfer button is clicked.
 /// 
    
      </
    
      summary
    
      >
    
      
 protected void Button4_Click(object sender, EventArgs e)
 {
 //Transfer postback processing to the Transfer.aspx page instead of Default.aspx page.
 Server.Transfer("~/Transfer.aspx");
 }
   
     

 

Target.aspx.cs

 

代码

   
     

    
      
    
       protected void Page_Load(object sender, EventArgs e)
 {
 //Use IsCrossPagePostBack to determine if a postback occurred from the source page.
 if (this.PreviousPage.IsCrossPagePostBack)
 {
 SaveData();
 }
 }

 /// 
    
      <
    
      summary
    
      >
    
      
 /// Transfer data to label controls.
 /// 
    
      </
    
      summary
    
      >
    
      
 private void SaveData()
 {
 //Get data using FindControl() to locate reference to the control on source page (Default.aspx).
 TextBox text1 = this.PreviousPage.FindControl("TextBox1") as TextBox;
 labName.Text = text1.Text;
 TextBox text2 = this.PreviousPage.FindControl("TextBox2") as TextBox;
 labAddress.Text = text2.Text;
 TextBox text3 = this.PreviousPage.FindControl("TextBox3") as TextBox;
 labCity.Text = text3.Text;
 }
   
     

 

Target2.aspx.cs

 

代码

 

Transfer.aspx.cs

代码

   
     

    
      
    
       protected void Page_Load(
    
      object
    
       sender, EventArgs e)
 {
 
    
      //
    
      Transfer from Default.aspx
    
      

    
       SaveData();
 }

 
    
      ///
    
       
    
      <summary>
    
      
 
    
      ///
    
       Transfer data to label controls.
 
    
      ///
    
       
    
      </summary>
    
      

    
       private void SaveData()
 {
 
    
      //
    
      Get data using FindControl() to locate reference to the control on source page (Default.aspx).
    
      

    
       TextBox text1 = this.PreviousPage.FindControl(
    
      "
    
      TextBox1
    
      "
    
      ) 
    
      as
    
       TextBox;
 labName.Text = text1.Text;
 TextBox text2 = this.PreviousPage.FindControl(
    
      "
    
      TextBox2
    
      "
    
      ) 
    
      as
    
       TextBox;
 labAddress.Text = text2.Text;
 TextBox text3 = this.PreviousPage.FindControl(
    
      "
    
      TextBox3
    
      "
    
      ) 
    
      as
    
       TextBox;
 labCity.Text = text3.Text;
 }
   
     

 

来自：http://www.asp.net/general/videos/how-do-i-implement-a-cross-page-postback-in-aspnet