Frameworks 如何使用实体数据模型（EDMX）插入到表中

我试图在VB.NET中编写一个按钮处理程序，如果选中复选框，它将从gridview中读取行并将它们写入DB

我将此应用程序设置为使用EntityDataSource，并将我的.edmx文件添加到DAL文件夹中。我已经编写了button方法，但是我对EF的了解还不够，不知道如何处理gridview中的数据。以下是我的btn_点击方法：

Private Sub btnGetChecks_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnGetChecks.Click
'********************************************
'* gets status of checkbox and writes to db *
'********************************************
Dim row As GridViewRow

Label6.Text = ""
For Each row In DvsGridView.Rows
  Dim RowCheckBox As CheckBox = CType(row.FindControl("chkStatus"), CheckBox)
  If RowCheckBox.Checked Then
    Label6.Text += row.Cells(5).Text & " Checked "
    ' Need to write checked data to the db
    ' ******* WHAT GOES HERE? *******
    Else

    Label6.Text += row.Cells(5).Text & " Unchecked "

  End If
Next
End Sub

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我对EDMX相当陌生，但了解VB.net。任何方向都将不胜感激。

请检查此示例代码，并对其进行修改以匹配您的实体和对象

 Using db As New DBEntities()

   'set values here
    Dim x As New TableNameE()

    x.col1 = "value1"
    x.col2 = "value2"

    db.AddToTableNameE(x)
    db.SaveChanges()
End Using

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多亏了@rs，我才能够解决我的问题。参考公认的答案，对于那些想知道proj中应该包含什么.addToTableName（）的人来说，应该是.Add（x）。对于每一行，使用.SaveChanges（）也会在一定程度上影响性能，您应该创建一个Dim列表（tablename（））并将“x”添加到列表中，然后像这样使用.AddRange（）：

//creating a data access class is one way to connect to your db by passing in db path
Dim context As New Namespace.YourContext(New DataAccessClass() With {.Path = aBrowsedForSDFFileTextBoxMaybe.Text})
Dim listOfTableObjects As List(Of Namespace.TableObject) = New List(Of Namespace.TableObject)

    For n = 1 To SomethingRelatedToRows
    Dim tableObject As New Namespace.TableObject() With {
                    .entityProp1 = TableObject(n).entityProp1,
                    .entityProp2 = TableObject(n).entityProp2,
                    .entityProp3 = TableObject(n).entityProp3,
                    .entityProp4 = TableObject(n).entityProp4,
                    .entityProp5 = TableObject(n).entityProp5,
                    .entityProp6 = TableObject(n).entityProp6
                }

        listOfTableObjects.Add(tableObject)

    Next n

    //.TableObjects being the DbSet from the ...Context.vb file
    context.TableObjects.AddRange(listOfTableObjects) 
    context.SaveChanges()