Siverlight dataform 使用小结

WCF服务中获取EntityQuery方法：

        public UserContext db = new UserContext();
        public EntityQuery<userinfo> GetUsers()
        {
            return db.GetUserinfoesQuery();
        }

siverlight调用并绑定dataform

 UserRIA ur = new UserRIA();
        private void dfUser_Loaded(object sender, RoutedEventArgs e)
        {
            //var aa = ur.db.Load(ur.GetUsers(), Load,null).Entities;
            //dfUser.ItemsSource = aa;
            //dfUser.CurrentItem = aa.First();
           //dfUser.ItemsSource = GetUsers();
            ur.db.Load(ur.GetUsers()).Completed +=new EventHandler(TestDataForm_Completed);
        }
        void TestDataForm_Completed(object sender, EventArgs e)
        {
            dfUser.ItemsSource = ur.db.userinfos;
        }
        private void Load(System.ServiceModel.DomainServices.Client.LoadOperation load)
        {
            dfUser.CurrentItem = load.Entities.First();
        }

siverlight页面dataform设计

引入命名空间：  xmlns:dataform="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls.Data.DataForm.Toolkit"

添加dataform

        <dataform:DataForm x:Name="dfUser" Loaded="dfUser_Loaded" DataContext="{Binding}">

           ///头模板
            <dataform:DataForm.HeaderTemplate>
                <DataTemplate>
                    <StackPanel>
                        <TextBlock Text="用户信息列表"></TextBlock>
                    </StackPanel>
                </DataTemplate>
            </dataform:DataForm.HeaderTemplate>

          编辑模板
            <dataform:DataForm.EditTemplate>
                <DataTemplate>
                    <StackPanel>
                        <TextBlock Text="编辑"></TextBlock>
                        <dataform:DataField Label=" 用户名">
                            <TextBox Text="{Binding username,Mode=TwoWay}"></TextBox>
                        </dataform:DataField>
                        <dataform:DataField Label=" 密码">
                            <TextBox Text="{Binding userpwd,Mode=TwoWay}"></TextBox>
                        </dataform:DataField>
                        <Button x:Name="btn_Save" Content="保存修改" Click="btn_Save_Click" Margin="10,0,0,0" VerticalAlignment="Center"/>
                        <Button x:Name="btn_Cancel" Content="取消" Click="btn_Cancel_Click" Margin="10,0,0,0" VerticalAlignment="Center"/>
                    </StackPanel>
                </DataTemplate>
            </dataform:DataForm.EditTemplate>

           /添加模板
            <dataform:DataForm.NewItemTemplate>
                <DataTemplate>
                    <StackPanel>
                        <TextBlock Text="添加"></TextBlock>
                        <dataform:DataField Label=" 用户名">
                            <TextBox Text="{Binding username,Mode=TwoWay}"></TextBox>
                        </dataform:DataField>
                        <dataform:DataField Label=" 密码">
                            <TextBox Text="{Binding userpwd,Mode=TwoWay}"></TextBox>
                        </dataform:DataField>
                    </StackPanel>
                </DataTemplate>
            </dataform:DataForm.NewItemTemplate>

            只读模板
            <dataform:DataForm.ReadOnlyTemplate>
                <DataTemplate>
                    <StackPanel>
                        <TextBlock Text="只读"></TextBlock>
                        <dataform:DataField Label=" 用户名">
                            <TextBox Text="{Binding username,Mode=TwoWay}"></TextBox>
                        </dataform:DataField>
                        <dataform:DataField Label=" 密码">
                            <TextBox Text="{Binding userpwd,Mode=TwoWay}"></TextBox>
                        </dataform:DataField>
                    </StackPanel>
                </DataTemplate>
            </dataform:DataForm.ReadOnlyTemplate>
        </dataform:DataForm>

 

        //修改dataform 数据
        private void btn_Save_Click(object sender, RoutedEventArgs e)
        {
            userinfo us = dfUser.CurrentItem as userinfo;
            dfUser.CommitEdit();
            if (ur.db.HasChanges)
            {
                ur.db.SubmitChanges();
                dfUser.ApplyTemplate();
                MessageBox.Show("ok");
            }
            else
            {
                MessageBox.Show("无修改项！");
            }
        }
        //取消修改
        private void btn_Cancel_Click(object sender, RoutedEventArgs e)
        {
            ur.db.RejectChanges();
        }