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GridView里的按钮事件

news 来源：原创 2024/5/11 2:31:32

问题参考：

下面是Insus.NET实现演示：

CObj.cs代码：

View Code

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

/// <summary>
/// Summary description for CObj
/// </summary>
namespace Insus.NET
{
     public class CObj
    {
         private int _Nbr;
         private int _Val;


         public int Nbr
        {
             get { return _Nbr; }
             set { _Nbr = value; }
        }

         public int Val
        {
             get { return _Val; }
             set { _Val = value; }
        }
         public CObj()
        {
             //
             // TODO: Add constructor logic here
             //
        }
    }
}

GridView代码：

View Code

< asp:GridView ID ="GridView1" runat ="server" AutoGenerateColumns ="false" Width ="230px" OnRowCreated ="GridView1_RowCreated" >
                 < Columns >
                     < asp:TemplateField >
                         < HeaderTemplate >
                            key
                         </ HeaderTemplate >
                         < ItemTemplate >
                             <% # Eval ( " Nbr " ) %>
                         </ ItemTemplate >
                     </ asp:TemplateField >
                     < asp:TemplateField >
                         < HeaderTemplate >
                            Value
                         </ HeaderTemplate >
                         < ItemTemplate >
                             < asp:Label ID ="LabelVal" runat ="server" Text ='<%# Eval("Val") % >'> </ asp:Label >
                         </ ItemTemplate >
                     </ asp:TemplateField >
                     < asp:TemplateField >
                         < HeaderTemplate >
                            operator
                         </ HeaderTemplate >
                         < ItemTemplate >
                             < asp:Button ID ="ButtonAdd" runat ="server" Text ="+" />   
                             < asp:Button ID ="ButtonSubtract" runat ="server" Text ="-" />
                         </ ItemTemplate >
                     </ asp:TemplateField >
                 </ Columns >
             </ asp:GridView >

引用 using Insus.NET;

xxx.aspx.cs代码：

View Code

protected void Page_Load( object sender, EventArgs e)
    {
         if (!IsPostBack)
        {
            Data_Binding();
        }
    }

     private void Data_Binding()
    {
        List<CObj> MyObj = new List<CObj>();

        CObj o = new CObj();
        o.Nbr = 1;
        o.Val = 100;
        MyObj.Add(o);

         this.GridView1.DataSource = MyObj;
         this.GridView1.DataBind();
    }

     protected void GridView1_RowCreated( object sender, GridViewRowEventArgs e)
    {
         if (e.Row.RowType != DataControlRowType.DataRow) return;

         if (e.Row.FindControl( " ButtonAdd ") != null)
        {
             var ButtonAdd = e.Row.FindControl( " ButtonAdd ") as Button;
            ButtonAdd.Click += ButtonAdd_Click;
        }

         if (e.Row.FindControl( " ButtonSubtract ") != null)
        {
             var ButtonSubtract = e.Row.FindControl( " ButtonSubtract ") as Button;
            ButtonSubtract.Click += ButtonSubtract_Click;
        }
    }

     private void ButtonAdd_Click( object sender, EventArgs e)
    {
         var button = sender as Button;
        GridViewRow gvr = (GridViewRow)button.Parent.Parent;
         var Label = (Label) this.GridView1.Rows[gvr.RowIndex].FindControl( " LabelVal ");
         int v = Convert.ToInt32(Label.Text);
        Label.Text = (v + 1).ToString();
    }

     private void ButtonSubtract_Click( object sender, EventArgs e)
    {
         var button = sender as Button;
        GridViewRow gvr = (GridViewRow)button.Parent.Parent;
         var Label = (Label) this.GridView1.Rows[gvr.RowIndex].FindControl( " LabelVal ");
         int v = Convert.ToInt32(Label.Text);
        Label.Text = (v - 1).ToString();
    }

于 11：46分，Insus.NET添加二笔记录，分别测试每一行效果：