Textbox Event:
protected override void OnInit(EventArgs e) { TextBox txtName = new TextBox(); txtName.ID = "txtName"; txtName.Text = "Enter your name"; this.form1.Controls.Add(txtName); base.OnInit(e); }
Dropdown List Event
DropDownList DropDown1 = new DropDownList();
this.form1.Controls.Add(DropDown1);
Example:
DropDownList ddlStatus = new DropDownList();
ddlStatus.Items.Insert(0, (new ListItem(“Pending”, “1″)));
ddlStatus.Items.Insert(1, (new ListItem(“Aproved”, “2″)));
ddlStatus.Items.Insert(2, (new ListItem(“Deleted”, “3″)));
ddlStatus.ID = “ddlStatus”;
Page.Form.Controls.Add(ddlStatus); //Remember
ddlStatus.SelectedIndexChanged += this.ddlStatus_SelectedIndexChanged1;
ddlStatus.AutoPostBack = true;
#region “ddlStatus_SelectedIndexChanged1″
protected void ddlStatus_SelectedIndexChanged1(object sender, System.EventArgs e)
{
Response.Redirect(“http://wwww.yahoo.com”);
}
#endregion
CheckBox Event :
#region “Page_Load”
protected void Page_Load(object sender, EventArgs e)
{
CheckBox CheckBox1 = new CheckBox();
this.form1.Controls.Add(CheckBox1);
((CheckBox)CheckBox1).CheckedChanged += new System.EventHandler(this.ClickMe);
CheckBox1.AutoPostBack = true; //Remember
}
#endregion
public void ClickMe(object sender, EventArgs e)
{
Response.Write(“Checkbox is checked”);
}
Button Event:
Example: protected void Page_Load(object sender, EventArgs e)
{
Button Button1 = new Button();
Button1.Text = “Submit”;
Panel3.Controls.Add(Button1);
Button1.Click += new System.EventHandler(this.JustAnotherEventHandler);
}
void JustAnotherEventHandler(object sender, System.EventArgs e)
{
Label1.Text = “Clicked”;
//ListBox1.Items.Add(“Event 1 says hello”);
}
Example:
System.Web.UI.HtmlControls.HtmlGenericControl div1= new
HtmlGenericControl( “div” );
div1.ID = “divNewTextBox”;
TextBox txt1 = new TextBox();
div1.Controls.Add( txt1 );
Linkbutton Events:
Example: You add an event delegate to a linkbutton and use the called method to do the work.
In C# (you can do the translation yourself) :
LinkButton lb = new LinkButton();
lb.text = “foo”;
lb.CommandArgument = “foo”;
lb.Click += new EventHandler(LbClick);
c.Controls.Add(lb);
then :
public void LbClick(object sender, EventArgs e)
{
LinkButton lb = (LinkButton)sender;
string bar = lb.CommandArgment; //should == foo
}
Example2:
private LinkButton lb = new LinkButton();
protected void Page_Load(object sender, EventArgs e)
{
LinkButton lbTemp = CreateLinkButton(“lnk1″, “my 1st dynam control”);
lbTemp.Click += linkbutton_click;
//pnlHoldsStuff.Controls.Add(lbTemp);
this.Form1.Controls.Add(lb);
}
[System.Runtime.InteropServices.OptionalAttribute, System.Runtime.InteropServices.DefaultParameterValueAttribute("")] // ERROR: Optional parameters aren’t supported in C#
//string vsCssClsass
private LinkButton CreateLinkButton(string vsID, string vsText)
{
lb.ID = vsID;
lb.Text = vsText;
//lb.CssClass = vsCssClsass;
return lb;
}
private void linkbutton_click(object sender, System.EventArgs e)
{
Response.Write(“I got clicked”);
LinkButton lb = CreateLinkButton(“lnk2″, “my 2nd dynam control”);
lb.Click += linkbutton2_click;
//pnlHoldsStuff.Controls.Add(lb);
this.Form1.Controls.Add(lb);
}
private void linkbutton2_click(object sender, System.EventArgs e)
{
Response.Write(“Second Link button clicked”);
}
Posted by lokeshbasana 
Posted by lokeshbasana 