zoukankan      html  css  js  c++  java
  • How to use CreateChildContorls method inherited from System.Web.UI.Control

        *** The CreateChildControls Method ***

        When you create any ASP.Net controls in a web part, you should override the CreateChildControls method. In the CreateChildControls method, you will instantiate each control, set its properties, create any necessary event handlers, and add the created child controls to the web part's Controls collection inherited from System.Web.UI.Control.

        Finally, you can draw the output by overriding the RenderWebPart method.
        The following codes shows a portion of the CreateChildControls method in C#.
       protected Label lbError;
       
    protected Label lbCustomerId;
       
    /// <summary>
       
    ///  CreateChildControls
       
    ///  Override CreateChildControls to add
       
    ///  child ASP.NET controls to this Web Part.
       
    /// </summary>

       protected override void CreateChildControls()
       
    {
          
    //Lable that display error messages
          lbError = new Label();
          lbError.Visible 
    = false;
          lbError.ForeColor 
    = Color.Red;
          Controls.Add(lbError);   
    //Add to controls list
       
          
    //Lable that display Customer Id
          lbCustomerId =  new Label();
          lbCustomerId.Visible 
    = false;
          Controls.Add(lbCustomerId);   
    //Add to controls list
       }
  • 相关阅读:
    多个表单项的动态校验
    js遍历循坏二维数组,显示天气情况
    纯css3 实现的焦点图
    实现元素水平和垂直居中的问题
    简易商品购物车
    用jquery的animate动画做成的左侧菜单伸缩
    MongoDB聚合
    NoSQL介绍
    MongoDB索引
    数据库索引简介
  • 原文地址:https://www.cnblogs.com/rickie/p/25727.html
Copyright © 2011-2022 走看看