在Silverlight 4的单元格编辑模板中将数据网格中的组合框动态更改为文本框 [英] Dynamically Changing Combobox to TextBox in datagrid inside Cell Editing Template in silverlight 4
本文介绍了在Silverlight 4的单元格编辑模板中将数据网格中的组合框动态更改为文本框的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我正在使用Silverlight 4制作应用程序。我遇到了一个问题,当同一行的特定列值(使用组合框)发生更改时,我需要以编程方式将特定的组合框更改为文本框。我需要在事件cell EditEnded上更改此设置。
请注意,我需要将单元格模板组合框更改为文本框,而不是单元格模板文本块。这是我的列,我需要在其中决定其组合框选定值。
<sdk:DataGridTemplateColumn Header="Instruction Type"
CanUserResize="False" CanUserReorder="False">
<sdk:DataGridTemplateColumn.CellTemplate>
<DataTemplate>
<TextBlock Margin="2" Text="{Binding operationType}" />
</DataTemplate>
</sdk:DataGridTemplateColumn.CellTemplate>
<sdk:DataGridTemplateColumn.CellEditingTemplate>
<DataTemplate>
<ComboBox x:Name="instruction" />
</DataTemplate>
</sdk:DataGridTemplateColumn.CellEditingTemplate>
</sdk:DataGridTemplateColumn>
此列comboBox需要更改为此处的TextBox:
<sdk:DataGridTemplateColumn Header="Destination">
<sdk:DataGridTemplateColumn.CellTemplate>
<DataTemplate>
<TextBlock Margin="2" Text="{Binding destination}" />
</DataTemplate>
</sdk:DataGridTemplateColumn.CellTemplate>
<sdk:DataGridTemplateColumn.CellEditingTemplate>
<DataTemplate>
<ComboBox x:Name="destination"/>
</DataTemplate>
</sdk:DataGridTemplateColumn.CellEditingTemplate>
</sdk:DataGridTemplateColumn>
C#代码:
public class Instruction
{
public string operationType { get; set; }
public string destination { get; set; }
}
private void myGrid_CellEditEnded(object sender, DataGridCellEditEndedEventArgs e)
{
DataGrid obj = (DataGrid)sender;
Instruction obj1 = (Instruction)obj.SelectedItem;
if (e.Column.Header.ToString() == "Instruction Type")
{
if (obj1.operationType == "ADD" || obj1.operationType == "SUB")
{
// Here I need Require Code ????/
}
}
}
我在等待任何帮助我的天才..
推荐答案
以下是一个工作示例http://anzensoft.smtp.ru/FlashKiller2/DataGridTrickTestPage.html
这里是源代码http://cid-a1de71e9f2ae2f82.office.live.com/self.aspx/.Public/DataGridTrick.zip
XAML代码
<Grid x:Name="LayoutRoot" Background="White">
<sdk:DataGrid x:Name="dataGrid1" AutoGenerateColumns="False"
PreparingCellForEdit="dataGrid1_PreparingCellForEdit">
<sdk:DataGrid.Columns>
<sdk:DataGridTemplateColumn Header="Instruction Type">
<sdk:DataGridTemplateColumn.CellTemplate>
<DataTemplate>
<TextBlock Margin="2" Text="{Binding operationType}" />
</DataTemplate>
</sdk:DataGridTemplateColumn.CellTemplate>
<sdk:DataGridTemplateColumn.CellEditingTemplate>
<DataTemplate>
<ComboBox x:Name="instruction"
SelectedValue="{Binding operationType, Mode=TwoWay}">
<s:String>ADD</s:String>
<s:String>MUL</s:String>
</ComboBox>
</DataTemplate>
</sdk:DataGridTemplateColumn.CellEditingTemplate>
</sdk:DataGridTemplateColumn>
<sdk:DataGridTemplateColumn Header="Destination">
<sdk:DataGridTemplateColumn.CellTemplate>
<DataTemplate>
<TextBlock Margin="2" Text="{Binding destination}" />
</DataTemplate>
</sdk:DataGridTemplateColumn.CellTemplate>
<sdk:DataGridTemplateColumn.CellEditingTemplate>
<DataTemplate>
<Grid>
<ComboBox x:Name="destinationComboBox"
SelectedValue="{Binding destination, Mode=TwoWay}">
<s:String>sdas</s:String>
<s:String>dasdasdasd</s:String>
</ComboBox>
<TextBox x:Name="destinationTextBox"
Text="{Binding destination, Mode=TwoWay}"
Visibility="Collapsed"/>
</Grid>
</DataTemplate>
</sdk:DataGridTemplateColumn.CellEditingTemplate>
</sdk:DataGridTemplateColumn>
</sdk:DataGrid.Columns>
</sdk:DataGrid>
</Grid>
C#代码
namespace DataGridTrick
{
public partial class MainPage : UserControl
{
public MainPage()
{
InitializeComponent();
Loaded += new RoutedEventHandler(MainPage_Loaded);
}
void MainPage_Loaded(object sender, RoutedEventArgs e)
{
dataGrid1.ItemsSource = new List<Instruction>()
{
new Instruction(){operationType = "ADD", destination ="sdas"},
new Instruction(){operationType = "ADD", destination = "dasdasdasd"}
};
}
private void dataGrid1_PreparingCellForEdit(object sender, DataGridPreparingCellForEditEventArgs e)
{
if ((string)e.Column.Header == "Destination")
{
var tb = e.EditingElement.FindName("destinationTextBox") as TextBox;
var cb = e.EditingElement.FindName("destinationComboBox") as ComboBox;
var instruction = e.EditingElement.DataContext as Instruction;
if (tb == null || cb == null || instruction == null)
{
throw new
Exception("Something wrong here.. this dosen't have to happen!!");
}
else
{
if (instruction.operationType == "MUL")
{
tb.DataContext = e.EditingElement.DataContext;
cb.DataContext = null;
tb.Visibility = System.Windows.Visibility.Visible;
cb.Visibility = System.Windows.Visibility.Collapsed;
}
else
{
tb.DataContext = null;
cb.DataContext = e.EditingElement.DataContext;
tb.Visibility = System.Windows.Visibility.Collapsed;
cb.Visibility = System.Windows.Visibility.Visible;
}
}
}
}
}
public class Instruction
{
public string operationType { get; set; }
public string destination { get; set; }
}
}
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