通过C＃代码创建DataGridTemplateColumn

本文介绍了通过C＃代码创建DataGridTemplateColumn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

我有我创建了一个动态的Datagrid。我通过代码创建它的每一列后面。我有一列的麻烦，我想在不编辑时，文本块中显示，但在编辑的组合框。我有交易一个ObservableCollection。每笔交易都有一个名为帐户类型。以下是我迄今为止：

 私人DataGridTemplateColumn GetAccountColumn（）
 {
 //创建列
 DataGridTemplateColumn accountColumn =新DataGridTemplateColumn（）; 
 accountColumn.Header =账户; 
 
结合绑定=新的绑定（账户）; 
 bind.Mode = BindingMode.TwoWay; 
 
 //创建文本块
 FrameworkElementFactory textFactory =新FrameworkElementFactory（typeof运算（TextBlock中））; 
 textFactory.SetBinding（TextBlock.TextProperty，绑定）; 
的DataTemplate textTemplate =新的DataTemplate（）; 
 textTemplate.VisualTree = textFactory; 
 
 //创建组合框
 bind.Mode = BindingMode.OneWay; 
 FrameworkElementFactory comboFactory =新FrameworkElementFactory（typeof运算（组合框））; 
 comboFactory.SetValue（ComboBox.DataContextProperty，this.Transactions）; 
 comboFactory.SetValue（ComboBox.IsTextSearchEnabledProperty，真）; 
 comboFactory.SetBinding（ComboBox.ItemsSourceProperty，绑定）; 
 
的DataTemplate comboTemplate =新的DataTemplate（）; 
 comboTemplate.VisualTree = comboFactory; 
 
 //设置模板到列
 accountColumn.CellTemplate = textTemplate; 
 accountColumn.CellEditingTemplate = comboTemplate; 
 
返回accountColumn; 
}

该值显示在文本块。然而，在组合框，我只得到一个字符每个项目可以显示。例如，下面是正文块：

但是，当我点击编辑，进入组合框，这里是所示：

有人可以帮助我出这么在下拉列表中的项目正常显示？。此外，当我从下拉框中选择东西时，文本块不会更新与我选择的项目

更新：

下面是我的专栏，截至目前。在ComboBox中的项目正在正常显示。现在的问题是，当选择一个新的项目，在TextBlock的文本不会更新与新项目。

 私人DataGridTemplateColumn GetAccountColumn（）
 {
 //创建列
 DataGridTemplateColumn accountColumn =新DataGridTemplateColumn（）; 
 accountColumn.Header =账户; 
 
结合绑定=新的绑定（账户）; 
 bind.Mode = BindingMode.OneWay; 
 
 //创建文本块
 FrameworkElementFactory textFactory =新FrameworkElementFactory（typeof运算（TextBlock中））; 
 textFactory.SetBinding（TextBlock.TextProperty，绑定）; 
的DataTemplate textTemplate =新的DataTemplate（）; 
 textTemplate.VisualTree = textFactory; 
 
 //创建组合框
结合comboBind =新的绑定（账户）; 
 comboBind.Mode = BindingMode.OneWay; 
 
 FrameworkElementFactory comboFactory =新FrameworkElementFactory（typeof运算（组合框））; 
 comboFactory.SetValue（ComboBox.IsTextSearchEnabledProperty，真）; 
 comboFactory.SetValue（ComboBox.ItemsSourceProperty，this.Accounts）; 
 comboFactory.SetBinding（ComboBox.SelectedItemProperty，comboBind）; 
 
的DataTemplate comboTemplate =新的DataTemplate（）; 
 comboTemplate.VisualTree = comboFactory; 
 
 //设置模板到列
 accountColumn.CellTemplate = textTemplate; 
 accountColumn.CellEditingTemplate = comboTemplate; 
 
返回accountColumn; 
}

帐户属性声明这样在我的MainWindow类：

 公开的ObservableCollection<串GT;帐户{搞定;组; } 
 
公共主窗口（）
 {
 this.Types =新的ObservableCollection<串GT;（）; 
 this.Parents =新的ObservableCollection<串GT;（）; 
 this.Transactions =新的ObservableCollection<&交易GT;（）; 
 this.Accounts =新的ObservableCollection<串GT;（）; 
 
的openDatabase（）; 
的InitializeComponent（）; 
}

下面是我的事务类：

 公共类交易
 {
私人字符串日期; 
私人串号; 
私人串账户; 
 
公共字符串日期
 {
 {返回日期; } 
集合{日期=值; } 
} 
 
公共串号
 {
 {返回数; } 
集合{数=价值; } 
} 
 
公共字符串帐户
 {
 {返回账户; } 
集合{账户=价值; } 
} 
}

解决方案

您绑定的ItemsSource 来选定的值，一个字符串，又名字符数组，所以每一个字符作为一个项目，在的ItemsSource 结合想必应该针对可从中选择的值一些其他的集合。

I have a dynamic Datagrid that I have created. I am creating each column for it through code behind. I am having troubles on a column that I want to be displayed at a textblock when not editing, but as a combobox while editing. I have an ObservableCollection of Transactions. Each Transaction has a type called "Account". Here is what I have so far:

    private DataGridTemplateColumn GetAccountColumn()
    {
        // Create The Column
        DataGridTemplateColumn accountColumn = new DataGridTemplateColumn();
        accountColumn.Header = "Account";

        Binding bind = new Binding("Account");
        bind.Mode = BindingMode.TwoWay;

        // Create the TextBlock
        FrameworkElementFactory textFactory = new FrameworkElementFactory(typeof(TextBlock));
        textFactory.SetBinding(TextBlock.TextProperty, bind);
        DataTemplate textTemplate = new DataTemplate();
        textTemplate.VisualTree = textFactory;

        // Create the ComboBox
        bind.Mode = BindingMode.OneWay;
        FrameworkElementFactory comboFactory = new FrameworkElementFactory(typeof(ComboBox));
        comboFactory.SetValue(ComboBox.DataContextProperty, this.Transactions);
        comboFactory.SetValue(ComboBox.IsTextSearchEnabledProperty, true);
        comboFactory.SetBinding(ComboBox.ItemsSourceProperty, bind);

        DataTemplate comboTemplate = new DataTemplate();
        comboTemplate.VisualTree = comboFactory;

        // Set the Templates to the Column
        accountColumn.CellTemplate = textTemplate;
        accountColumn.CellEditingTemplate = comboTemplate;

        return accountColumn;
    }

The value displays in the TextBlock. However, in the combobox, I am only getting one character to display per item. For example, here is the textblock:

But when I click to edit and go into the combobox, here is what is shown:

Can someone help me out so that the items in the Combobox are displayed properly? Also, when I select something from the Combobox, the textblock isn't updated with the item I selected.

UPDATED:

Here is my column as of now. The items in the ComboBox are being displayed properly. The issue now is that when a new item is selected, the text in the TextBlock isn't updated with the new item.

    private DataGridTemplateColumn GetAccountColumn()
    {
        // Create The Column
        DataGridTemplateColumn accountColumn = new DataGridTemplateColumn();
        accountColumn.Header = "Account";

        Binding bind = new Binding("Account");
        bind.Mode = BindingMode.OneWay;

        // Create the TextBlock
        FrameworkElementFactory textFactory = new FrameworkElementFactory(typeof(TextBlock));
        textFactory.SetBinding(TextBlock.TextProperty, bind);
        DataTemplate textTemplate = new DataTemplate();
        textTemplate.VisualTree = textFactory;

        // Create the ComboBox
        Binding comboBind = new Binding("Account");
        comboBind.Mode = BindingMode.OneWay;

        FrameworkElementFactory comboFactory = new FrameworkElementFactory(typeof(ComboBox));
        comboFactory.SetValue(ComboBox.IsTextSearchEnabledProperty, true);
        comboFactory.SetValue(ComboBox.ItemsSourceProperty, this.Accounts);
        comboFactory.SetBinding(ComboBox.SelectedItemProperty, comboBind);

        DataTemplate comboTemplate = new DataTemplate();
        comboTemplate.VisualTree = comboFactory;

        // Set the Templates to the Column
        accountColumn.CellTemplate = textTemplate;
        accountColumn.CellEditingTemplate = comboTemplate;

        return accountColumn;
    }

The "Accounts" property is declared like this in my MainWindow class:

public ObservableCollection<string> Accounts { get; set; }

    public MainWindow()
    {
        this.Types = new ObservableCollection<string>();
        this.Parents = new ObservableCollection<string>();
        this.Transactions = new ObservableCollection<Transaction>();
        this.Accounts = new ObservableCollection<string>();

        OpenDatabase();
        InitializeComponent();
    }

Here is my Transaction Class:

public class Transaction
{
    private string date;
    private string number;
    private string account;

    public string Date
    {
        get { return date; }
        set { date = value; }
    }

    public string Number
    {
        get { return number; }
        set { number = value; }
    }

    public string Account
    {
        get { return account; }
        set { account = value; }
    }
}

解决方案

You bind the ItemsSource to the selected value, a string, aka char array, so every character is used as an item, the ItemsSource binding presumably should target some other collection from which the value can be chosen.

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