Question

点击“更新”按钮后，它会将gridview数据更新为数据库。

但是gridview数据无法自动刷新，它仍然会在修改前显示数据。

我需要再次返回页面才能看到更新的数据。有什么问题？更新后我已经绑定了数据......

Protected Sub GridView1_RowUpdating(ByVal sender As Object, ByVal e As GridViewUpdateEventArgs) Handles Gridview1.RowUpdating
    If Gridview1.EditIndex = -1 Then
        BindData()
        Exit Sub
    End If

    If e.RowIndex >= 0 Then

        Dim row As GridViewRow = DirectCast(Gridview1.Rows(e.RowIndex), GridViewRow)

        If row.RowType = DataControlRowType.DataRow Then

            Dim Col1_SL = CType(Gridview1.Rows(e.RowIndex).FindControl("cb1_SL"), CheckBox)
            Dim Col1_VL = CType(Gridview1.Rows(e.RowIndex).FindControl("cb1_VL"), CheckBox)
            Dim Col1_ML = CType(Gridview1.Rows(e.RowIndex).FindControl("cb1_ML"), CheckBox)
            Dim Col1_PH = CType(Gridview1.Rows(e.RowIndex).FindControl("cb1_PH"), CheckBox)
            Dim Col1_APH = CType(Gridview1.Rows(e.RowIndex).FindControl("cb1_APH"), CheckBox)
            Dim Col1_TOIL = CType(Gridview1.Rows(e.RowIndex).FindControl("cb1_TOIL"), CheckBox)
            Dim Col1_Others = CType(Gridview1.Rows(e.RowIndex).FindControl("tb1_Others"), TextBox)
            Dim Col1_RosterKey = CType(Gridview1.Rows(e.RowIndex).FindControl("lb1_rosterkey"), Label)
            Dim Col1_StartTime = CType(Gridview1.Rows(e.RowIndex).FindControl("Col1_StartTime"), TimeSelector)
            Dim Col1_EndTime = CType(Gridview1.Rows(e.RowIndex).FindControl("Col1_EndTime"), TimeSelector)

            Dim cmd As New System.Data.SqlClient.SqlCommand
            Dim sql As String
            Dim reader As System.Data.SqlClient.SqlDataReader

            'Col1
            Using conn As New System.Data.SqlClient.SqlConnection(ConfigurationManager.ConnectionStrings("hris_shiftdutyConnectionString").ConnectionString)
                conn.Open()
                cmd.Connection = conn
                sql = "SET DATEFORMAT dmy;UPDATE troster SET SL='" & Convert.ToInt32(Col1_SL.Checked) & "', VL='" & Convert.ToInt32(Col1_VL.Checked) & "', ML='" & Convert.ToInt32(Col1_ML.Checked) & "', "
                sql += "PH='" & Convert.ToInt32(Col1_PH.Checked) & "', APH='" & Convert.ToInt32(Col1_APH.Checked) & "', TOIL='" & Convert.ToInt32(Col1_TOIL.Checked) & "', "
                sql += "Others='" & RTrim(Col1_Others.Text) & "', "

                If Col1_StartTime.AmPm = TimeSelector.AmPmSpec.PM Then
                    sql += "start_time='" & Col1_StartTime.Hour + 12 & ":" & Col1_StartTime.Minute & ":00', "
                Else
                    sql += "start_time='" & Col1_StartTime.Hour & ":" & Col1_StartTime.Minute & ":00', "
                End If
                If Col1_EndTime.AmPm = TimeSelector.AmPmSpec.PM Then
                    sql += "end_time='" & Col1_EndTime.Hour + 12 & ":" & Col1_EndTime.Minute & ":00' "
                Else
                    sql += "end_time='" & Col1_EndTime.Hour & ":" & Col1_EndTime.Minute & ":00' "
                End If

                sql += "where roster_key='" & Col1_RosterKey.Text & "';"
                cmd.CommandText = sql
                reader = cmd.ExecuteReader()
                conn.Close()
                reader.Close()
            End Using

            'Reset the edit index.
            Gridview1.EditIndex = -1

            'Bind data to the GridView control.
            BindData()
        End If
    End If


End Sub

Private Sub BindData()

    Dim StartDateStr As String

    StartDateStr = Trim(Request.QueryString("sd"))
    StartDateStr = Left(StartDateStr, 10)
    'date should be best in ISO format, i.e. yyyy-mm-ddTHH:mm:ss[.mmm] as "Set Dateformat dmy" is not supported by DataSet object
    'StartDateStr = Right(StartDateStr, 4) & "-" & Mid(StartDateStr, 4, 2) & "-" & Left(StartDateStr, 2) & " T00:00:00"

    Dim StartDate As DateTime
    Dim EndDate As DateTime
    StartDate = Convert.ToDateTime(StartDateStr)
    EndDate = Format(DateAdd(DateInterval.Day, 6, StartDate), "dd/MM/yyyy")

    g_header1 = StartDate   'Monday
    g_header2 = Format(DateAdd(DateInterval.Day, 1, StartDate), "dd/MM/yyyy")
    g_header3 = Format(DateAdd(DateInterval.Day, 2, StartDate), "dd/MM/yyyy")
    g_header4 = Format(DateAdd(DateInterval.Day, 3, StartDate), "dd/MM/yyyy")
    g_header5 = Format(DateAdd(DateInterval.Day, 4, StartDate), "dd/MM/yyyy")
    g_header6 = Format(DateAdd(DateInterval.Day, 5, StartDate), "dd/MM/yyyy")
    g_header7 = EndDate     'Sunday

    Gridview1.DataSource = Session("dt")
    Gridview1.DataBind()
End Sub

乔

Answer 1

在我的情况下，我无法重置编辑索引。虽然看起来Op的代码已经包含了这个，但是对于像我一样到达此页面的其他人，只需确保在数据绑定之前重置EditIndex。

Gridview1.EditIndex = -1
Gridview1.DataBind()

Answer 2

您正在尝试绑定RowUpdating事件中的数据。单击行的“更新”按钮时，但在GridView控件更新行之前，将引发RowUpdating事件。

所以我认为你可以绑定RowUpdated事件中的数据。单击行的“更新”按钮但在GridView控件更新行之后引发RowUpdated事件。

在rowupdating之后不会刷新Gridview数据

2 个答案: