WPF DataGrid行添加codebehind [英] WPF DataGrid Row add in codebehind

问题描述

我来自VB.Net WinForms。现在我想在WPF中编写一个小应用程序，在datagridview中列出一些文件。我使用WPF的DataGrid，创建了一些列。然后无法添加我的行。

请帮助我选择正确的方法来获取我的文件名，状态文本和缩略图添加到DataGrid行？

在VB.Net WinForms中，我可以添加如下一行：

  Datagridview1.Rows.add Myvalue，RowStateText，Hello World，MyDate）
  

在WPF的DataGrid中，我可以添加

  DataGrid1.Items.Add（New DataGridRow（））
  

但是如何填写我的DataGridRow？

  Private Sub AddFilesAndFolders（ByVal Base as IO.DirectoryInfo，ByRef dgv As DataGrid）
'为每个di为IO.DirectoryInfo在Base.GetDirectories 
'调用AddFilesAndFolders（di，dgv）
'下一个
 
 Dim item As DataGridRow 
 
 
 
 For each fi As IO.FileInfo In Base.GetFiles 
 item = New DataGridRow'<  -  test 1（row is添加但空）
 Dim di As New MyFileInfo <  -  test 2（我自己的类与公共成员，但如何添加为行与声明的列？）
 di.FileName = fi.FullName 
 di.FileDate = fi.LastAccessTime 
 
 item.Item = fi.FullName 
 dgv.Items.Add（di）
下一个
 End Sub 
  

解决方案

你应该设置一个ItemsSource而不是手动添加项目。如果这些列设置正确，那么它只会'工作'！

  dbv.ItemsSource = Base.GetFiles 
  

或

  dbv.ItemsSource = CreateMyFileInfos（Base.GetFiles）
  

如果您有任何更多问题，请回到这里。

编辑：在第二次检查中，您可能希望以递归方式执行。在这种情况下，您的 AddFilesAndFolders 可以替代为 CreateFilesAndFolders ，这将返回FileInfo / MyFileInfo对象的集合，并与递归生成子文件夹的集合;然后绑定从第一个调用返回的整个列表到网格。

希望有帮助！

I am from VB.Net WinForms comming. Now I wanted to write a small app in WPF, listing some files in a datagridview. I used WPF's DataGrid, created some Columns. And then failed to add my rows.

Please, can you help me to select the right way to get my filenames, state-text and thumbnails added to the DataGrid Row?

In VB.Net WinForms I can add a row like this:

Datagridview1.Rows.add(Myvalue, "RowStateText", "Hello World", MyDate)

In WPF's DataGrid I can add

DataGrid1.Items.Add(New DataGridRow())

But how to fill my DataGridRow?

  Private Sub AddFilesAndFolders(ByVal Base As IO.DirectoryInfo, ByRef dgv As DataGrid)
        'For Each di As IO.DirectoryInfo In Base.GetDirectories
        '    Call AddFilesAndFolders(di, dgv)
        'Next

        Dim item As DataGridRow



        For Each fi As IO.FileInfo In Base.GetFiles
            item = New DataGridRow'<-- test 1 (row is added but empty)
            Dim di As New MyFileInfo'<-- test 2 (my own class with public members, but how to add as row with declared columns?)
            di.FileName = fi.FullName
            di.FileDate = fi.LastAccessTime

            item.Item = fi.FullName
            dgv.Items.Add(di)
        Next
    End Sub

解决方案

Hi: you should set an ItemsSource instead of adding items manually. If the columns are set up correctly then it will just 'work'!

dbv.ItemsSource = Base.GetFiles

or

dbv.ItemsSource = CreateMyFileInfos(Base.GetFiles)

If you have any more problems, please post back here.

Edit: on second inspection it looks like you may want to be doing it recursively. In which case your AddFilesAndFolders could instead be CreateFilesAndFolders, which would return a collection of FileInfo/MyFileInfo objects, merged with the collections produced by the child folders recursively; then bind the whole list returned from the first call, to the grid.

Hope that helps!

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