DataGridView上的組合框

Question

我在datagridview上有一個組合框。 我能夠填充組合框的值，但是我無法做的是在加載datagridview時將數據庫值填充到組合框“ text”中。

我希望這是有道理的。 基本上，我只希望返回的數據反映在組合框顯示中。

非常感謝您的協助。

 Dim cbo As DataGridViewComboBoxColumn
        If GlobalVariables.UsrSite = 0 Then
            SQL.ReadQuery("Select LogsReason as [Logs Update], IncNo as [Number], SiteName As [Site Name], FleetNo As [Fleet No], FleetType As [Fleet Type], Location,
            SMR as [Hours], TimeDown As [Down Time], EstTimeUp as [Est Repair], DateDiff(d, TimeDown, GetDate()) as [Days Down] 
            from UDOData where status = 'Down' order by [Days Down] Desc")
        Else
            SQL.ReadQuery("Select LogsReason as [Logs Update], IncNo as [Number], SiteName As [Site Name], FleetNo As [Fleet No], FleetType As [Fleet Type], Location,
            SMR as [Hours], TimeDown As [Down Time], EstTimeUp as [Est Repair], DateDiff(d, TimeDown, GetDate()) as [Days Down] from UDOData 
            Where SiteID = " & GlobalVariables.UsrSite & " and Status = 'Down' order by [Days Down] Desc")
        End If
        dgvUDO.DataSource = SQL.SQLDS.Tables(0)

        cbo.DataSource = SQL.SQLDS.Tables(0)
        cbo.DisplayMember = "Logs Update"
        cbo.ValueMember = "Logs Update"
        cbo.DataPropertyName = "Logs Update"

我收到異常錯誤消息，說“ logs Update”不存在，但已加載到datagridview中。

Answer 1

我最終做了這個，對我有用。

Dim cbo As DataGridViewComboBoxColumn
        cbo = dgvUDO.Columns("cboLogsUDO")
        Dim AltDb As New DataTable

        SQL.ReadQuery("Select Descrip from dbo.UDOLogs")
        AltDb = SQL.SQLDS.Tables(0)
        'LOAD DATA GRID VIEW DATA
        If GlobalVariables.UsrSite = 0 Then
            SQL.ReadQuery("Select ID, LogsReason as [Logs Update], IncNo as [Number], SiteName As [Site Name], FleetNo As [Fleet No], FleetType As [Fleet Type], Location,
            SMR as [Hours], TimeDown As [Down Time], EstTimeUp as [Est Repair], DateDiff(d, TimeDown, GetDate()) as [Days Down] 
            from UDOData where status = 'Down' order by [Days Down] Desc")
        Else
            SQL.ReadQuery("Select ID, LogsReason as [Logs Update], IncNo as [Number], SiteName As [Site Name], FleetNo As [Fleet No], FleetType As [Fleet Type], Location,
            SMR as [Hours], TimeDown As [Down Time], EstTimeUp as [Est Repair], DateDiff(d, TimeDown, GetDate()) as [Days Down] from UDOData 
            Where SiteID = " & GlobalVariables.UsrSite & " and Status = 'Down' order by [Days Down] Desc")
        End If

        'SET DATA GRIDVIEW DATA SOURCE
        dt = SQL.SQLDS.Tables(0)
        dgvUDO.DataSource = dt
        dgvUDO.Rows(0).Selected = True

        'LOAD UPDATE COMMAND FOR DATA GRIDVIEW CHANGES
        SQL.SQLDA.UpdateCommand = New SqlClient.SqlCommandBuilder(SQL.SQLDA).GetUpdateCommand

        'HIDE UNWANTED COLUMNS
        dgvUDO.Columns("Logs Update").Visible = False
        dgvUDO.Columns("ID").Visible = False


        'SET COMBOBOX ATTRIBUTES
        cbo.DataSource = AltDb
        cbo.DisplayMember = "Descrip"
        cbo.ValueMember = "Descrip"
        cbo.DataPropertyName = "Logs Update"

這使我能夠調用返回的db中datagridview的值作為組合框“文本”值，但將下拉項顯示為另一個表中的項。