Gridview checkbox操作

Gridview checkbox主要来同时删除多条记录

一、在GridView中创建CheckBox

       很简单，在前台代码中应用TemplateField。另外一种方法是应用Literal。TemplateField的代码如下：

<asp:TemplateField>

    <ItemTemplate> 

<asp:CheckBox ID="CheckBox1" runat="server" Checked="False"
AutoPostBack="True" Text="选择" />asp:CheckBox></ItemTemplate> 

   <ItemStyle Width="20px"/>

</asp:TemplateField>

二、CheckBox全选、全消

      在Gridview1外 再添加一个CheckBox实现全选、全消。由于采用的.net代码实现，要记得把checkSelectAll的AutoPostBack属性设为True。

    <asp:CheckBox ID="CheckBox2" runat="server"  Text="全选"
        onCheckedChanged="CheckBox2_CheckedChanged" AutoPostBack="True" />

后台代码如下：

 protected void CheckBox2_CheckedChanged(object sender, EventArgs e)
        {

                for (int i = 0; i < GridView1.Rows.Count; i++)        

         {

                    CheckBox mybox1 = (CheckBox)GridView1.Rows[i].FindControl("CheckBox1");  

                   if (CheckBox2.Checked == true)               

                 mybox1.Checked = true;  

                   else                    

                mybox1.Checked = false;

                }

}

       再加入删除操作，实现多选删除。加个删除按钮：

<asp:Button ID="Button1" runat="server" Text="删除"  onclick="Button1_Click "confirm('确定要删除文档吗？')" Width="62px" />

删除代码：

    protected void Button1_Click(object sender, EventArgs e)  

   {       

                SqlConnection myconnection = new SqlConnection(con);

                myconnection.Open();  

               for (int i = 0; i <= GridView1.Rows.Count - 1; i++)  

               {     CheckBox cbox = (CheckBox)GridView1.Rows[i].FindControl("CheckBox1");  

                   if (cbox.Checked == true)  

                   {  string a = GridView1.DataKeys[i].Value.ToString();

                        string sqlstr = "delete  from Employee where EmployeeID='" + a + "'";   

                      SqlCommand mycommand = new SqlCommand(sqlstr, myconnection);  

                       mycommand.ExecuteNonQuery();

                    }

                }

        Gridview1.DataBind();

}

 我初学不久，内容比较简单，希望一起学习交流。