Question

我有一个应用程序UWP，可将数据从CSV文件导入到ListView。

如何将数据放入DataGrid？现在，我使用以下代码将数据放入ListView：

Dim CsvRows = New ObservableCollection(Of String)()

Dim picker = New Windows.Storage.Pickers.FileOpenPicker()
picker.ViewMode = PickerViewMode.List
picker.FileTypeFilter.Add(".csv")

Dim file = Await picker.PickSingleFileAsync()

CsvRows.Clear()

Using csvReader = New CsvParse.CsvFileReader(Await file.OpenStreamForReadAsync())
        Dim row = New CsvParse.CsvRow()

        While csvReader.ReadRow(row)
            Dim newRow = ""

            For i = 0 To row.Count
                newRow += row(i) + ","

                i += 1
            Next

            CsvRows.Add(newRow)
        End While

End Using

GridTabacchi.ItemsSource = CsvRows

Answer 1

将数据从CSV文件导入到datagrid

通常，我们经常使用CsvReader隐蔽的csv文件来收集可以直接绑定到DataGrid列的文件。这是您可以参考的官方document。我将在下面提供示例代码。

模型类

Public Class Item
    Public Property Id As String
    Public Property Title As String
    Public Property Link As String
    Public Property Type As String
    Public Property Remark As String
    Public Property Time As String
End Class

背后的代码

Private Sub DataGrid_Loaded(ByVal sender As Object, ByVal e As RoutedEventArgs)
    Using reader = New StreamReader("Assets\Archive.csv", True)

        Using csv = New CsvReader(reader)
            Dim records = csv.GetRecords(Of Item)()

            For Each item In records
                Items.Add(item)
            Next
        End Using
    End Using

    MyDataGrid.ItemsSource = Items
End Sub

使DataGridTextColumn基于模型类，并按如下所示绑定每个属性。

<controls:DataGrid.Columns>
    <controls:DataGridTextColumn
        Width="*"
        Binding="{Binding Id}"
        Header="ID"
        Tag="Id"
        />
    <controls:DataGridTextColumn
        Width="*"
        Binding="{Binding Title}"
        Header="Title"
        Tag="Title"
        />
    <controls:DataGridComboBoxColumn
        Width="*"
        Binding="{Binding Link}"
        Header="Link"
        ItemsSource="{x:Bind source}"
        Tag="Link"
        />
    <controls:DataGridTextColumn
        Width="*"
        Binding="{Binding Type}"
        Header="Type"
        Tag="Type"
        />
    <controls:DataGridTextColumn
        Width="*"
        Binding="{Binding Remark}"
        Header="Remark"
        Tag="Remark"
        />
    <controls:DataGridTextColumn
        Width="*"
        Binding="{Binding Time}"
        Header="Time"
        Tag="Time"
        />
</controls:DataGrid.Columns>

Answer 2

我在公司的VB .NET应用程序中创建了一个.CSV上传文件，并显示在网格中。这是我的方法：

Dim dt as DataTable = New DataTable
Dim firstLine As Boolean = True

 Dim sr As StreamReader = New StreamReader(txtFileLocation.Text.Trim())
     Do While sr.Peek() >= 0
         If firstLine Then
            firstLine = False
            Dim cols() As String = sr.ReadLine.Split(","c)
            For Each col As String In cols
                dt.Columns.Add(New DataColumn(col, GetType(String)))
             Next
          Else
             Dim data() As String = sr.ReadLine.Split(","c)
             dt.Rows.Add(data)
          End If
      Loop
 sr.Close()

 dataGrid.DataSource = dt

将数据从CSV文件导入到datagrid

2 个答案: