DataColumnMappingCollection.Count 屬性

定義

命名空間:

System.Data.Common

組件:

System.Data.Common.dll

來源:

DataColumnMappingCollection.cs

取得集合中 DataColumnMapping 物件的數目。

public:
 property int Count { int get(); };

[System.ComponentModel.Browsable(false)]
public int Count { get; }

[<System.ComponentModel.Browsable(false)>]
member this.Count : int

Public ReadOnly Property Count As Integer

屬性值

Int32

集合中的項目數目

實作

Count

屬性

BrowsableAttribute

範例

下列範例會 DataColumnMappingCollection 建立集合、將 物件加入 DataColumnMapping 至集合，並顯示對應的源數據行清單。

public void CreateColumnMappings()
{
    DataColumnMappingCollection mappings =
        new DataColumnMappingCollection();
    mappings.Add("Category Name","DataCategory");
    mappings.Add("Description","DataDescription");
    mappings.Add("Picture","DataPicture");
    string message = "ColumnMappings:\n";
    for(int i=0;i < mappings.Count;i++)
    {
        message += i.ToString() + " "
            + mappings[i].ToString() + "\n";
    }
    Console.WriteLine(message);
}

Public Sub CreateColumnMappings()
    Dim mappings As New DataColumnMappingCollection()
    mappings.Add("Category Name", "DataCategory")
    mappings.Add("Description", "DataDescription")
    mappings.Add("Picture", "DataPicture")
    Dim message As String = "ColumnMappings:" + ControlChars.Cr
    Dim i As Integer
    For i = 0 To mappings.Count - 1
        message += i.ToString() + " " + mappings(i).ToString() _
           + ControlChars.Cr
    Next i
    Console.WriteLine(message)
End Sub

另請參閱

• ADO.NET 概觀 \(部分機器翻譯\)