共用方式為

AccessDataSourceDesigner.GetConnectionString 方法

  • 參考

定義

命名空間:
System.Web.UI.Design.WebControls
組件:
System.Design.dll

取得在設計階段有效的連接字串，以供與這個設計工具關聯的控制項使用。

protected:
 override System::String ^ GetConnectionString();
protected override string GetConnectionString ();
override this.GetConnectionString : unit -> string
Protected Overrides Function GetConnectionString () As String

傳回

String

String，包含關聯 AccessDataSource 的設計階段連接字串。

範例

下列程式碼範例示範如何使用 GetConnectionString 方法，在設計階段顯示與控制項預留位置中控制項相關聯的 AccessDataSource Microsoft Access 資料庫的連接字串。

此程式碼範例是提供給 類別之較大範例的 AccessDataSourceDesigner 一部分。

// Generate design time markup.
public override string GetDesignTimeHtml()
{
    // Generate a design-time placeholder containing the 
    // DataFile and the ConnectionString properties.
    // Split the ConnectionString into segments so it doesn't make
    // placeholder too wide.
    string[] connectParts = GetConnectionString().Split(new char[] { ';' });
    string connectString = "  " + connectParts[0];

    for (int i = 1; i < connectParts.Length; i++)
        connectString += ";<br>  " + connectParts[i].Trim();

    return CreatePlaceHolderDesignTimeHtml(
        "DataFile: " + DataFile + "<br />" +
        "Connection string:<br />" + connectString);
}

' Generate design time markup.
Public Overrides Function GetDesignTimeHtml() As String
    ' Generate a design-time placeholder containing the 
    ' DataFile and the ConnectionString properties.
    ' Split the ConnectionString into segments so it doesn't make
    ' placeholder too wide.
    Dim connectParts() As String
    connectParts = GetConnectionString().Split((";").ToCharArray())
    Dim connectString As String
    connectString = "  " & connectParts(0)

    Dim i As Integer
    For i = 1 To connectParts.Length - 1
        connectString &= ";<br>  " & connectParts(i).Trim()
    Next

    Return CreatePlaceHolderDesignTimeHtml( _
        "DataFile: " & DataFile & "<br />" & _
        "Connection string:<br />" & connectString)
End Function

備註

方法 GetConnectionString 會將 DataFile 控制項的 屬性對應至設計工具網站，然後使用 ConnectionString 控制項的 屬性來產生連接字串。

適用於

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