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下载：100积分Dynamically create controls in asp.net handle button click events
ASP.NET,C#.NET,VB.NET,JQuery,JavaScript,Gridview
aspdotnet-suresh offers C#.net articles and tutorials,csharp dot net,asp.net articles and tutorials,VB.NET Articles,Gridview articles,code examples of asp.net 2.0 /3.5,AJAX,SQL Server Articles,examples of .net technologies
Introduction:
this article I will explain how to create dynamic controls like button,
linkbutton and other controls and how to handle button click events in asp.net.
Description:
In previous posts I explained
and many articles relating to , , and
etc. Now I will
explain how to handle dynamically created controls click events in asp.net for
that first we need to write the following code in your aspx page
&html xmlns="http://www.w3.org/1999/xhtml"&
&head id="Head1"
runat="server"&
&title&Create controls dynamically in asp.net and handle button
click events&/title&
&form id="form2"
runat="server"&
&asp:Panel ID="pnlInfo"
runat="server"&
&/asp:Panel&
After completion of aspx page design add the
following namespaces in code behind
System.Web.UI.WebC
After add namespaces write the following code
in code behind like as shown below
protected void Page_Load(object sender, EventArgs
Table tbldynamic = new Table();
TableCell tc=new TableCell();
TableCell tc1=new TableCell();
TableRow tr = new TableRow();
Label lblName =new Label();
lblName.ID = "lblName";
lblName.Text = "UserName:";
tc.Controls.Add(lblName);
TextBox txtName=new TextBox();
txtName.ID = "txtName";
tc1.Controls.Add(txtName);
tr.Cells.Add(tc);
tr.Cells.Add(tc1);
tbldynamic.Rows.Add(tr);
tc=new TableCell();
tc1=new TableCell();
tr=new TableRow();
Label lblEmail = new Label();
lblEmail.ID = "lblEmail";
lblEmail.Text = "Email:";
tc.Controls.Add(lblEmail);
TextBox txtEmail = new TextBox();
txtEmail.ID = "txtEmail";
tc1.Controls.Add(txtEmail);
tr.Cells.Add(tc);
tr.Cells.Add(tc1);
tbldynamic.Rows.Add(tr);
tc = new TableCell();
tc1 = new TableCell();
tr = new TableRow();
Button btnSubmit = new Button();
btnSubmit.ID = "btnSubmit";
btnSubmit.Text = "Submit";
btnSubmit.Click += new
System.EventHandler(btnSubmit_click);
tc1.Controls.Add(btnSubmit);
tr.Cells.Add(tc);
tr.Cells.Add(tc1);
tbldynamic.Rows.Add(tr);
pnlInfo.Controls.Add(tbldynamic);
// Dynamic button click event
protected void btnSubmit_click(object sender, EventArgs
TextBox txtUserName = (TextBox)pnlInfo.FindControl("txtName");
TextBox txtEmail = (TextBox)pnlInfo.FindControl("txtEmail");
Response.Write("UserName:
"+txtUserName.Text+"; "+"Email: "+txtEmail.Text);
VB.NET Code
Imports System.Web.UI.WebControls
Partial Class Default2
Inherits System.Web.UI.Page
Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs) Handles
Dim tbldynamic As New Table()
Dim tc As New TableCell()
Dim tc1 As New TableCell()
Dim tr As New TableRow()
Dim lblName As New Label()
lblName.ID = "lblName"
lblName.Text = "UserName:"
tc.Controls.Add(lblName)
Dim txtName As New TextBox()
txtName.ID = "txtName"
tc1.Controls.Add(txtName)
tr.Cells.Add(tc)
tr.Cells.Add(tc1)
tbldynamic.Rows.Add(tr)
tc = New TableCell()
tc1 = New TableCell()
tr = New TableRow()
Dim lblEmail As New Label()
lblEmail.ID = "lblEmail"
lblEmail.Text = "Email:"
tc.Controls.Add(lblEmail)
Dim txtEmail As New TextBox()
txtEmail.ID = "txtEmail"
tc1.Controls.Add(txtEmail)
tr.Cells.Add(tc)
tr.Cells.Add(tc1)
tbldynamic.Rows.Add(tr)
tc = New TableCell()
tc1 = New TableCell()
tr = New TableRow()
Dim btnSubmit As New Button()
btnSubmit.ID = "btnSubmit"
btnSubmit.Text = "Submit"
AddHandler btnSubmit.Click, AddressOf
btnSubmit_click
tc1.Controls.Add(btnSubmit)
tr.Cells.Add(tc)
tr.Cells.Add(tc1)
tbldynamic.Rows.Add(tr)
pnlInfo.Controls.Add(tbldynamic)
' Dynamic button click event
Protected Sub btnSubmit_click(ByVal sender As Object, ByVal e As EventArgs)
Dim txtUserName As TextBox = DirectCast(pnlInfo.FindControl("txtName"), TextBox)
Dim txtEmail As TextBox = DirectCast(pnlInfo.FindControl("txtEmail"), TextBox)
Response.Write(("UserName:
" + txtUserName.Text & ";
" & "Email: ") +
txtEmail.Text)
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