关于服务器控件的自定义事件

[hy_lihuan]

要需要动态的根据数据库的数据来生成imagebutton控件，生成的控件在页面上面点击的时候，要求生成的事件写在页面上。（因为我一个按钮可能因为页面的不同，产生完全不同的事件）
举例：我从数据库读取两个按钮：添加、修改；在一个页面上面点击添加执行添加人员的代码，在另一个页面上面点击添加执行添加课程的代码，怎么样实现阿？
更高的要求：怎么样可以写成象button这样的控件阿，直接双击控件的某一个事件就可以产生事件，写入自己的代码；
不知道说清楚了没有，考虑好久，只知道是委托，怎么实现还是不清楚，最好写有事例代码

[reaperwu]

public delegate void PageIndexChangedEventHandler(object sender, System.EventArgs e);
public event PageIndexChangedEventHandler PageIndexChanged;

protected override void CreateChildControls()
{
Controls.Clear();
LinkButton lbtnFirst = new LinkButton();
lbtnFirst.ID = "lbtnFirst";
lbtnFirst.Text = "首页";
lbtnFirst.Click += new EventHandler(lbtnFirst_Click);
this.Controls.Add(lbtnFirst);
}

private void lbtnFirst_Click(object sender, System.EventArgs e)
{
if ( PageIndexChanged != null )
{
PageIndexChanged(this, e);
}
}

[fengyeng]

mark有时间好好看看！

[hy_lihuan]

完成任务结贴!希望大家多多帮忙

[hy_lihuan]

没有人回答吗?

[cpp2017]

控件中声明事件: public event System.EventHandler btnOKClick; 然后在控件的按纽事件中触自定义的事件. 在控件的render中 "<img onclick=\"" + this.Page.GetPostBackClientEvent(this, "123") + "\" >"; 控件实现IPostBackEventHandler接口 然后 #region IPostBackEventHandler 成员 public void RaisePostBackEvent(string eventArgument) { if (eventArgument == "123") { this.btnOKClick.Invoke(sender, e); } } #endregion 调用的时候. 页面中 this.Myc1.btnOKClick += new EventHandler(Myc1_btnOKClick); void Myc1_btnOKClick(object sender, EventArgs e) { Response.Write("SSS"); }

[cctaiyang]

页面中的代码:
protected void Page_Load(object sender, EventArgs e)
{
// 注册ToolBar点击事件
NSToolBar1.Add_Click += new ClickEventHandler(NSToolBar1_Add_Click);
NSToolBar1.Edit_Click += new ClickEventHandler(NSToolBar1_Edit_Click);
NSToolBar1.Delete_Click += new ClickEventHandler(NSToolBar1_Delete_Click);
NSToolBar1.Undo_Click += new ClickEventHandler(NSToolBar1_Undo_Click);
}

/// <summary>
/// 新增
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void NSToolBar1_Add_Click(object sender, ImageClickEventArgs e)
{
}

[cctaiyang]

控件中的代码如下:
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

// 定义ClickEventHandler事件委托
public delegate void ClickEventHandler(object sender, ImageClickEventArgs e);

public partial class NSToolBar : System.Web.UI.UserControl
{
protected void Page_Load(object sender, EventArgs e)
{

}

/// <summary>
/// 声明新增事件
/// </summary>
public event ClickEventHandler Add_Click;
/// <summary>
/// 声明编辑事件
/// </summary>
public event ClickEventHandler Edit_Click;
/// <summary>
/// 声明删除事件
/// </summary>
public event ClickEventHandler Delete_Click;
/// <summary>
/// 声明撤消事件
/// </summary>
public event ClickEventHandler Undo_Click;
/// <summary>
/// 声明保存事件
/// </summary>
public event ClickEventHandler Save_Click;


// 定义引发事件的AddClick方法
protected void AddClick(ImageClickEventArgs e)
{
if (Add_Click != null) Add_Click(this, e);
}

// 定义引发事件的EditClick方法
protected void EditClick(ImageClickEventArgs e)
{
if (Edit_Click != null) Edit_Click(this, e);
}

// 定义引发事件的DeleteClick方法
protected void DeleteClick(ImageClickEventArgs e)
{
if (Delete_Click != null) Delete_Click(this, e);
}

// 定义引发事件的UndoClick方法
protected void UndoClick(ImageClickEventArgs e)
{
if (Undo_Click != null) Undo_Click(this, e);
}

// 定义引发事件的SaveClick方法
protected void SaveClick(ImageClickEventArgs e)
{
if (Save_Click != null) Save_Click(this, e);
}

/// <summary>
/// 在相关方法中调用引发Add事件的方法
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void imgbtn_Add_Click(object sender, ImageClickEventArgs e)
{
this.AddClick(e);
}

/// <summary>
/// 在相关方法中调用引发Edit事件的方法
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void imgbtn_Edit_Click(object sender, ImageClickEventArgs e)
{
this.EditClick(e);
}
/// <summary>
/// 在相关方法中调用引发Delete事件的方法
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void imgbtn_Delete_Click(object sender, ImageClickEventArgs e)
{
this.DeleteClick(e);
}

/// <summary>
/// 在相关方法中调用引发Undo事件的方法
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void imgbtn_Undo_Click(object sender, ImageClickEventArgs e)
{
this.UndoClick(e);
}

/// <summary>
/// 在相关方法中调用引发SaveClick事件的方法
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void imgbtn_Save_Click(object sender, ImageClickEventArgs e)
{
this.SaveClick(e);
}

/// <summary>
/// 定义NSToolBar的Add_Visible属性
/// </summary>
public Boolean Add_Visible
{
get
{
return this.imgbtn_Add.Visible;
}
set
{
this.imgbtn_Add.Visible = value;
}
}

/// <summary>
/// 定义NSToolBar的Edit_Visible属性
/// </summary>
public Boolean Edit_Visible
{
get
{
return this.imgbtn_Edit.Visible;
}
set
{
this.imgbtn_Edit.Visible = value;
}
}

/// <summary>
/// 定义NSToolBar的Delete_Visible属性
/// </summary>
public Boolean Delete_Visible
{
get
{
return this.imgbtn_Delete.Visible;
}
set
{
this.imgbtn_Delete.Visible = value;
}
}

/// <summary>
/// 定义NSToolBar的Undo_Visible属性
/// </summary>
public Boolean Undo_Visible
{
get
{
return this.imgbtn_Undo.Visible;
}
set
{
this.imgbtn_Undo.Visible = value;
}
}

/// <summary>
/// 定义NSToolBar的Save_Visible属性
/// </summary>
public Boolean Save_Visible
{
get
{
return this.imgbtn_Save.Visible;
}
set
{
this.imgbtn_Save.Visible = value;
}
}

}

[cctaiyang]

NSToolBar.ascx的代码:
<%@ Control Language="C#" AutoEventWireup="true" CodeFile="NSToolBar.ascx.cs" Inherits="NSToolBar" %>
<table width="0%" border="0">
<tr>
<td><asp:ImageButton ID="imgbtn_Add" runat="server" ImageUrl="~/Images/Add.png" OnClick="imgbtn_Add_Click" /></td>
<td><asp:ImageButton ID="imgbtn_Edit" runat="server" ImageUrl="~/Images/Edit.png" OnClick="imgbtn_Edit_Click" /></td>
<td><asp:ImageButton ID="imgbtn_Delete" runat="server" ImageUrl="~/Images/Delete.png" OnClick="imgbtn_Delete_Click" /></td>
<td><asp:ImageButton ID="imgbtn_Undo" runat="server" ImageUrl="~/Images/Undo.png" OnClick="imgbtn_Undo_Click" /></td>
<td><asp:ImageButton ID="imgbtn_Save" runat="server" ImageUrl="~/Images/Save.png" OnClick="imgbtn_Save_Click" /></td>
</tr>
</table>

[行勝於言！]

使用委托

[hy_lihuan]

cctaiyang(小刀可乐) :
你的办法是已经定义好所有的按钮,可是我需要从数据库里面的数据来确定按钮的阿;
或者说怎么样把你写好的按钮事件和我数据库的数据连结起来啊?

[antiking]

GZ