将一列复选框添加到将更新数据库中的字段的网格

Question

我有一个 GridView 保存我的订单表，该表出现在我的文档页面上（这些是插入语句中的插入值） - 这是选择语句：

Create View docgridview 
As 

Select A.OrderID
  ,A.DoctorId,B.Forename,B.Surname ,A.MedicineId,C.Name      as      MedicineName,D.pharmname,A.Dateordered, Approved
From  order_pres  A
Left  Join Patient   B on (A.PatientId  = B.PatientId)
Left  Join Medicine  C on (A.MedicineId = C.MedicineId)
Left  Join pharmacy  D on (A.PharmacyId   = D.PharmacyId)
Left  Join Doctor    E on (A.DoctorId  = E.DoctorId)

然后使用Docgridview将语句绑定到gridview：

 If Not IsPostBack Then
        Dim conn As New System.Data.SqlClient.SqlConnection("Data Source=(LocalDB)\v11.0;AttachDbFilename=|DataDirectory|\surgerydb.mdf;Integrated Security=True;Connect Timeout=30")
        Dim cmd3string As String = " Select * From docgridview  WHERE DoctorId = " & Session("DoctorId")
        Dim dt As New System.Data.DataTable()
        Dim da As New System.Data.SqlClient.SqlDataAdapter(cmd3string, conn)
        conn.Open()
        da.Fill(dt)
        conn.Close()

        GridViewdoc.DataSource = dt
        GridViewdoc.DataBind()
    End If

如何将一列复选框添加到 GridView 中，如果选中按钮，则更新从 order_pres 'approved' 和 'disapproved' 批准的列。点击

网格视图：

<asp:GridView ID="GridViewdoc" runat="server"  >

</asp:GridView>


<asp:Button ID="btnapprove" runat="server" Text="Button" />

要更新的表：

Answer 1

您需要手动定义网格视图中的列：

<asp:GridView ID="GridViewdoc" runat="server" AutoGenerateColumns="False">
      <Columns>
           <asp:BoundField DataField="OrderID"></asp:BoundField>
           <asp:BoundField DataField="DoctorId"></asp:BoundField>
           <asp:BoundField DataField="Forename"></asp:BoundField>
           <asp:BoundField DataField="Surname"></asp:BoundField>
           <asp:BoundField DataField="MedicineId"></asp:BoundField>
           <asp:BoundField DataField="MedicineName"></asp:BoundField>
           <asp:BoundField DataField="pharmname"></asp:BoundField>
           <asp:BoundField DataField="Dateordered"></asp:BoundField>
           <asp:BoundField DataField="Approved"></asp:BoundField>
           <asp:TemplateField>
               <ItemTemplate>
                   <asp:CheckBox Text="Approve" ID="ApproveBox" runat="server" />
               </ItemTemplate>
           </asp:TemplateField>
      </Columns>
</asp:GridView>

最后一列是复选框列。为 GridViewdoc.RowDataBound 添​​加一个处理程序以将框设置为选中（因为看起来您将它们全部默认为已批准）

Protected Sub GridViewdoc_RowDataBound(sender As Object, e As System.Web.UI.WebControls.GridViewRowEventArgs) Handles GridViewdoc.RowDataBound
    If e.Row.RowType = DataControlRowType.DataRow Then
        CType(e.Row.FindControl("ApproveBox"), Checkbox).Checked = True
    End If
End Sub

然后在您的按钮单击事件处理程序中处理选中和未选中的框。至于更改数据，您将需要使用会话或缓存变量来存储数据表，以便您可以修改其数据并重新绑定网格视图与更改的数据。

Protected Sub btnapprove_Click(sender As Object, e As System.EventArgs) Handles btnapprove.Click
    Dim dt As Data.DataTable = Session("YourDataTableVariable") 
    For Each row As GridViewRow In GridViewdoc.Rows
        Dim cb As CheckBox = row.FindControl("ApproveBox")
        If cb.checked Then
            dt.Rows(row.RowIndex).Item(8) = "Approved"
        Else
            dt.Rows(row.RowIndex).Item(8) = "Disapproved"
        End If
    Next
    GridViewdoc.DataSource = dt
    GridViewdoc.DataBind()
End Sub