〔ASP.NET〕利用按鈕Command呼叫特定程式 / CommandName&CommandArgument Code Behind OnClick

不管是Button or LinkButton...皆有CommandName & CommandArgument屬性，可產生各別Click事件去傳遞值

若同一頁面上之Button皆有相同的行為，則可設定其OnCommand屬性來連結後端觸發事件，並利用CommandName & CommandArgument來傳遞設定值

例如：

前端程式碼

<asp: LinkButton ID ="lkb01" runat ="server" OnCommand ="FuncGo" CommandName="R1_001"></asp :LinkButton>

後端程式碼

Protected Sub FuncGo(sender As Object, e As CommandEventArgs)

    Select Case e.CommandName

        Case "R1_001"

            'do somthing

        Case Else

    End Select

End Sub

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〔ASP.NET〕Page事件發生先後順序 / Page.Load,Master.Load

• ●一般情況下：
• 
  

Page.PreInit
Page.Init
Page.InitComplete
Page.PreLoad

Page.Load 

控制項事件(例如：Button.Click、TextBox.TextChanged...)

Page.LoadComplete 

Page.PreRender 

Page.PreRenderComplete

Page.Render

Page.Unload

• ●使用了 MasterPage 情況， MasterPage 與 ContentPage 事件順序：
• 
  

ContentPage.PreInit
Master.Init 
ContentPage.Init
ContentPage.InitComplete
ContentPage.PreLoad
ContentPage.Load Master.Load 
ContentPage.LoadComplete
ContentPage.PreRender
Master.PreRender 

ContentPage.PreRenderComplete

參考：ASP.NET 網頁生命週期概觀

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〔VBA〕 取得Excel選取的範圍列(不需連續) / Seletion.Areas Rows

範例：依據目前工作表所選取的範圍，顯示所有列號

Private Sub PrintTSF(ByVal savePath As String)

    Dim FB As Workbook: Set FB = ActiveWorkbook     '目前活頁簿

    Dim FS As Worksheet: Set FS = ActiveSheet            '目前工作表

    Dim xArea As Range

    Dim i As Integer

    Dim iRow As Integer

    With FS

        For Each xArea In Selection.Areas

            For i = 1 To xArea.Rows.Count

                iRow = xArea.Rows(i).Row            '一筆筆取得選取的列號

                MsgBox iRow

            Next

        Next xArea

    End With

    Set FB = Nothing

    Set FS = Nothing

End Sub

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〔SQL〕一次取得所有資料表內含資料筆數 / Select Table Rows

範例：執行將顯示資料庫內所有資料表名及內含資料筆數

SELECT T .name AS [資料表名] ,

       I.rows AS [筆數]

FROM   sys .tables AS T

       INNER JOIN sys. sysindexes AS I

       ON T .object_id = I . id  AND I .indid < 2

ORDER  BY T. name

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〔SQL〕UPDATE SELECT 利用SELECT做大量更新

範例：將訂單表身(OD00D1)出貨日，批次更新為訂單表頭(OD00H)出貨日

UPDATE

    OD00D1

SET

    OD00D1. DeliveryDate = OD00H. DeliveryDate,

    OD00D1. ProductDate = DATEADD( Day,-7 ,OD00H. DeliveryDate)

FROM

    OD00D1

    INNER JOIN OD00H

        ON OD00D1 .ODNo = OD00H .ODNo

WHERE

    OD00D1. ODNo = 'OD1606-00002'

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〔SQL〕一次取得資料庫欄位名稱、型態等設定 / Select Table Column Type

範例：列出資料庫內所有資料表及其欄位名稱等相關設定

SELECT 

    a.TABLE_NAME                 as 表格名稱 , 

    b.COLUMN_NAME                as 欄位名稱 , 

    b.DATA_TYPE                  as 資料型別 , 

    b.CHARACTER_MAXIMUM_LENGTH   as 最大長度, 

    b.COLUMN_DEFAULT             as 預設值 , 

    b.IS_NULLABLE                as 允許空值 , 

    ( 

        SELECT 

            value 

        FROM 

            fn_listextendedproperty (NULL, 'schema', 'dbo', 'table',   

                                     a.TABLE_NAME , 'column' , default ) 

        WHERE 

            name='MS_Description'   

            and objtype ='COLUMN'  

            and objname Collate Chinese_Taiwan_Stroke_CI_AS=b .COLUMN_NAME 

    ) as 欄位備註 

FROM 

    INFORMATION_SCHEMA.TABLES   a 

    LEFT JOIN INFORMATION_SCHEMA. COLUMNS b ON ( a.TABLE_NAME =b. TABLE_NAME) 

WHERE 

    TABLE_TYPE='BASE TABLE'  

ORDER BY  

    a.TABLE_NAME , ordinal_position   

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〔ASP.NET〕Convert sqlDataReader to DataTable / 將DataReader資料轉入DataTable

Dim dt As New DataTable

dt.Load(dr)        




範例：
        Dim Conn As SqlConnection = DBLink .setConn("ConnectionString" )

        Dim strSQL As String = ""

        Dim cmd As SqlCommand = Nothing

        Dim dr As SqlDataReader = Nothing

        Try

           

             strSQL = "SELECT * FROM Table"

            cmd = New SqlCommand(strSQL, Conn)

            dr = cmd.ExecuteReader

            If dr.HasRows Then

                Dim dt As New DataTable

                dt.Load(dr)

                Return dt

            Else

                Return Nothing

            End If

        Catch ex As Exception

            Return Nothing

        Finally

            PublicFunction.iniDispose(cmd, dr, Conn)

        End Try

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