Question

有没有办法在LINQ查询中重置网格显示的值？

例如，下面的查询使用两个返回值设置fullname，如果可能，Id喜欢在查询中执行的操作是将IsAccountVerified（字节列0或1值）值转换为true（如果为1），如果是其他任何其他值则为false其他任何东西，以便返回携带IsVerified的字符串值而不是其数据库整数值。

 Using ctx As New IdentityEntities()
        Dim users = (From d In ctx.useraccounts
                     Join e In ctx.userprofiles On d.Id Equals e.UserAccountId
                     Let fullname = e.FirstName & " " & e.LastName
                     Select New With {
                         d.Id,
                         fullname,
                         d.Username,
                         d.IsAccountVerified
                         }).ToList()

        Return users
    End Using

我目前正在转换RowCreated事件中的值

Public Sub gvSiteUsers_RowCreated(sender As Object, e As GridViewRowEventArgs) Handles gvSiteUsers.RowCreated
    Dim verifyCol As Integer
    For Each col As DataControlField In sender.Columns
        If col.HeaderText.ToLower().Trim() = "isverified" Then verifyCol = gvSiteUsers.Columns.IndexOf(col)
    Next
    For Each row As GridViewRow In sender.Rows
        If row.Cells(verifyCol).Text = "1" Then
            row.Cells(verifyCol).Text = "True"
        Else
            row.Cells(verifyCol).Text = "False"
        End If
    Next

End Sub

但是如果可能的话，我宁愿在查询中这样做

Answer 1

问题不明确。如果我理解d.IsAccountVerified是string。可能这可以做到吗？

Dim users = (From d In ctx.useraccounts
    Join e In ctx.userprofiles
       On d.Id Equals e.UserAccountId
    Let fullname = e.FirstName & " " & e.LastName
    Let verified = If(d.IsAccountVerified = 1, "True", "False")
    Select New With
          {
              d.Id,
              fullname,
              d.Username,
              verified
          }).ToList()

重置LINQ EF查询中的值

1 个答案: