獲取不同的值並將其轉換回DataTable

Question

我有一個「結果」，它是DataTable，我喜歡獲得x個不同的值（城市）並將其轉換回DataTable，我該如何做到這一點下面的代碼給了我一個錯誤

Dim query = (From x In results.AsEnumerable() 
         Select (x.Field(Of String)("City"))).Distinct().CopyToDataTable() 

所以我想要的是我可以得到的不同城市的記錄，但是我遇到的問題是將其轉換回Datable。

編輯：

我「其中」在這個語句中使用它並轉換爲表（正常工作），但不是「選擇」

Dim results = (From myRow In ds.Tables(1).AsEnumerable() 
      Where (myRow.Field(Of String)("xxxx") = xxxx) 
          Select myRow).Distinct().CopyToDataTable() 

Answer 1

這個你正在尋找一個例子嗎？

' Bind the System.Windows.Forms.DataGridView object 
' to the System.Windows.Forms.BindingSource object. 
dataGridView.DataSource = bindingSource 

' Fill the DataSet. 
Dim ds As New DataSet() 
ds.Locale = CultureInfo.InvariantCulture 
' See the FillDataSet method in the Loading Data Into a DataSet topic. 
FillDataSet(ds) 

Dim orders As DataTable = ds.Tables("SalesOrderHeader") 

' Query the SalesOrderHeader table for orders placed 
' after August 8, 2001. 
Dim query = _ 
    From order In orders.AsEnumerable() _ 
    Where order.Field(Of DateTime)("OrderDate") > New DateTime(2001, 8, 1) _ 
    Select order 

' Create a table from the query. 
Dim boundTable As DataTable = query.CopyToDataTable() 

' Bind the table to a System.Windows.Forms.BindingSource object, 
' which acts as a proxy for a System.Windows.Forms.DataGridView object. 
bindingSource.DataSource = boundTable 

http://msdn.microsoft.com/en-us/library/bb386921.aspx