学步园

在ASP.NET我们很经常用到控件DataGrid或Repeater等显示数据，时常会须要加一个控件为全选或全取消的功能，例：

//DataGrid
for (int i = 0; i < this.GVVideoLib.Rows.Count; i++)
{
    CheckBox cb = (CheckBox)this.GVVideoLib.Rows[i].FindControl("ckChoose");//模板中checkbox控件ID
    cb.Checked = true;
    //获取选中的ID
    //if (cb.Checked)
    //{
    //    Label lb = (Label)GVVideoLib.Rows[i].FindControl("lbSelect");//lbSelect隐藏控件ID 用于存放ID
    //    vidArr += lb.Text.Trim() + ",";
    //}
}
//Repeater
foreach (RepeaterItem item in rpReview.Items)
{
   CheckBox ckBox = (CheckBox)item.FindControl("ckChoose");//模板中checkbox控件ID
   ckBox.Checked = true;
   //获取选中的ID
   //if (ckBox.Checked)
   //{
   //  Label lbMsgId = (Label)item.FindControl("lbSelect");//lbSelect隐藏控件ID 用于存放ID
   //  sb.Append(lbMsgId.Text.Trim()).Append("|");
   //}
}

而在此silverlight 2.0正式版中的DataGrid控件没有rows等属性我们如何全选与取消呢,在运用过程中做了个人小结，如果还有好方法，多多学习：

XAML 为

<UserControl xmlns:data="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls.Data"  x:Class="CheckBoxAllDataGrid.Page"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
    Width="400" Height="300"  Loaded="UserControl_Loaded">
    <Grid x:Name="LayoutRoot" Background="White">
        <Grid>
            <Grid.RowDefinitions>
                <RowDefinition Height="30"/>
                <RowDefinition Height="Auto"/>
                <RowDefinition Height="30"/>
            </Grid.RowDefinitions>
            <CheckBox x:Name="CBAll" Grid.Row="0" Content="全选" Click="CheckBox_Click"></CheckBox>
                <data:DataGrid x:Name="ContentGrid" Grid.Row="1"  AutoGenerateColumns="False">
                    <data:DataGrid.Columns>
                    <data:DataGridTemplateColumn Header="选择">
                        <data:DataGridTemplateColumn.CellTemplate>
                            <DataTemplate>
                                <StackPanel Orientation="Horizontal">
                                    <CheckBox x:Name="ck" Tag="{Binding ID}" ></CheckBox>
                                </StackPanel>
                            </DataTemplate>
                        </data:DataGridTemplateColumn.CellTemplate>
                    </data:DataGridTemplateColumn>
                    <data:DataGridTextColumn  Header="编号"  Binding="{Binding ID}" />
                    <data:DataGridTextColumn  Header="名称"  Binding="{Binding Name}" />
                    <data:DataGridTextColumn  Header="年龄" Binding="{Binding age}" />
                    <data:DataGridTextColumn  Header="性别" Binding="{Binding sex}" />
                    <data:DataGridTextColumn  Header="时间" Binding="{Binding AddTime}" /> 
                </data:DataGrid.Columns>
                </data:DataGrid>
               <Button Content="查看选中项" Grid.Row="2" Width="60" Click="Button_Click"></Button>
            </Grid>
    </Grid>
</UserControl>

cs.

 

using System.Collections.Generic;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Browser;

namespace CheckBoxAllDataGrid
{
    public partial class Page : UserControl
    {
        public Page()
        {
            InitializeComponent();
        }

        private void UserControl_Loaded(object sender, RoutedEventArgs e)
        {            
            ContentGrid.ItemsSource = SetStudentInfo();
        }
        //全选
        private void CheckBox_Click(object sender, RoutedEventArgs e)
        {            
            if (ContentGrid.ItemsSource != null)
            {
                if (this.CBAll.IsChecked.Value)//全选
                {
                    foreach (object ovj in ContentGrid.ItemsSource)
                    {
                        CheckBox cb1 = ContentGrid.Columns[0].GetCellContent(ovj).FindName("ck") as CheckBox; //cb为

                        cb1.IsChecked = true;
                    }
                }
                else//取消
                {
                    foreach (object obj in ContentGrid.ItemsSource)
                    {
                        CheckBox cb2 = ContentGrid.Columns[0].GetCellContent(obj).FindName("ck") as CheckBox;

                        cb2.IsChecked = false;
                    }
                }
            }
        }
        //查看选中项
        private void Button_Click(object sender, RoutedEventArgs e)
        {
            string strID = "";
            foreach (object ovj in ContentGrid.ItemsSource)
            {
                CheckBox cb1 = ContentGrid.Columns[0].GetCellContent(ovj).FindName("ck") as CheckBox;

                if (cb1.IsChecked.Value)
                    strID = strID + cb1.Tag + ",";
            }
            if (strID != "")
                HtmlPage.Window.Alert("你选中学生ID号有" + strID.Substring(0, strID.Length - 1));
            else
                HtmlPage.Window.Alert("请选择学生");
        }

        public List<student> SetStudentInfo()
        { 
            List<student> studentinfo = new List<student>();

            studentinfo.Add(new student { ID = 1, Name = "test1", age = 22, sex = "男", AddTime = "1987-01-09" });
            studentinfo.Add(new student { ID = 2, Name = "李四", age = 22, sex = "男", AddTime = "1981-11-6" });
            studentinfo.Add(new student { ID = 3, Name = "王五", age = 22, sex = "男", AddTime = "2001-01-9" });
            studentinfo.Add(new student { ID = 4, Name = "小林", age = 22, sex = "女", AddTime = "1985-03-12" });
            studentinfo.Add(new student { ID = 5, Name = "小金", age = 22, sex = "男", AddTime = "1989-01-21" });
            studentinfo.Add(new student { ID = 6, Name = "小吴", age = 22, sex = "女", AddTime = "1984-08-5" });
            studentinfo.Add(new student { ID = 7, Name = "小王", age = 22, sex = "男", AddTime = "1983-07-09" });
            studentinfo.Add(new student { ID = 8, Name = "可耕地", age = 22, sex = "男", AddTime = "1986-09-10" });
            studentinfo.Add(new student { ID = 9, Name = "测试", age = 22, sex = "男", AddTime = "1988-11-09" });

            return studentinfo;
        }

        public  struct student
        {
            public int ID { get; set; }
            public string Name { get; set; }
            public int age { get; set; }
            public string sex { get; set; }
            public string AddTime { get; set; }
        }
    }
}