DataTableCollection.IndexOf 方法

來源:

DataTableCollection.cs

來源:

DataTableCollection.cs

來源:

DataTableCollection.cs

public:
 int IndexOf(System::String ^ tableName, System::String ^ tableNamespace);

public int IndexOf (string tableName, string tableNamespace);

member this.IndexOf : string * string -> int

Public Function IndexOf (tableName As String, tableNamespace As String) As Integer

參數

傳回

具有指定名稱之 DataTable 的以零為起始索引；如果集合中沒有資料表，則為 –1。

範例

下列範例會傳回 中具名數據表的 DataTableCollection索引。

private void GetIndexes()
{
    // Get the DataSet of a DataGrid.
    DataSet thisDataSet = (DataSet)DataGrid1.DataSource;

    // Get the DataTableCollection through the Tables property.
    DataTableCollection tables = thisDataSet.Tables;

    // Get the index of the table named "Authors", if it exists.
    if (tables.Contains("Authors"))
        System.Diagnostics.Debug.WriteLine(tables.IndexOf("Authors"));
}

Private Sub GetIndexes()
   ' Get the DataSet of a DataGrid.
   Dim thisDataSet As DataSet = CType(DataGrid1.DataSource, DataSet)

   ' Get the DataTableCollection through the Tables property.
   Dim tables As DataTableCollection = thisDataSet.Tables

   ' Get the index of the table named "Authors", if it exists.
   If tables.Contains("Authors") Then
      System.Diagnostics.Debug.WriteLine(tables.IndexOf("Authors"))
   End If
End Sub

備註

您可以使用 屬性來指定物件TableName的名稱DataTable。

另請參閱

• IndexOf(DataTable)
• TableName
• Remove(DataTable)

來源:

DataTableCollection.cs

來源:

DataTableCollection.cs

來源:

DataTableCollection.cs

public:
 int IndexOf(System::Data::DataTable ^ table);

public:
 virtual int IndexOf(System::Data::DataTable ^ table);

public int IndexOf (System.Data.DataTable? table);

public int IndexOf (System.Data.DataTable table);

public virtual int IndexOf (System.Data.DataTable table);

member this.IndexOf : System.Data.DataTable -> int

abstract member IndexOf : System.Data.DataTable -> int
override this.IndexOf : System.Data.DataTable -> int

Public Function IndexOf (table As DataTable) As Integer

Public Overridable Function IndexOf (table As DataTable) As Integer

參數

傳回

資料表的以零起始之索引；如果在集合中找不到此資料表，則為 -1。

範例

下列範例會傳回 中每個數據表的 DataTableCollection索引。

private void GetIndexes()
{
    // Get the DataSet of a DataGrid.
    DataSet thisDataSet = (DataSet)DataGrid1.DataSource;

    // Get the DataTableCollection through the Tables property.
    DataTableCollection tables = thisDataSet.Tables;

    // Get the index of each table in the collection.
    foreach (DataTable table in tables)
        System.Diagnostics.Debug.WriteLine(tables.IndexOf(table));
}

Private Sub GetIndexes()
    ' Get the DataSet of a DataGrid.
    Dim thisDataSet As DataSet = CType(DataGrid1.DataSource, DataSet)

    ' Get the DataTableCollection through the Tables property.
    Dim tables As DataTableCollection = thisDataSet.Tables
    Dim table As DataTable

    ' Get the index of each table in the collection.
    For Each table In tables
       System.Diagnostics.Debug.WriteLine(tables.IndexOf(table))
    Next
End Sub

備註

IndexOf使用 方法來判斷指定數據表的確切索引。

呼叫 IndexOf之前，您可以使用 方法來測試索引或名稱) Contains 指定的數據表是否存在 (。

另請參閱

• IndexOf(DataTable)
• TableName
• Remove(DataTable)

來源:

DataTableCollection.cs

來源:

DataTableCollection.cs

來源:

DataTableCollection.cs

public:
 int IndexOf(System::String ^ tableName);

public:
 virtual int IndexOf(System::String ^ tableName);

public int IndexOf (string? tableName);

public int IndexOf (string tableName);

public virtual int IndexOf (string tableName);

member this.IndexOf : string -> int

abstract member IndexOf : string -> int
override this.IndexOf : string -> int

Public Function IndexOf (tableName As String) As Integer

Public Overridable Function IndexOf (tableName As String) As Integer

參數

傳回

具有指定名稱之 DataTable 的以零為起始索引；如果集合中沒有資料表，則為 –1。

範例

下列範例會傳回 中具名數據表的 DataTableCollection索引。

private void GetIndexes()
{
    // Get the DataSet of a DataGrid.
    DataSet thisDataSet = (DataSet)DataGrid1.DataSource;

    // Get the DataTableCollection through the Tables property.
    DataTableCollection tables = thisDataSet.Tables;

    // Get the index of the table named "Authors", if it exists.
    if (tables.Contains("Authors"))
        System.Diagnostics.Debug.WriteLine(tables.IndexOf("Authors"));
}

Private Sub GetIndexes()
   ' Get the DataSet of a DataGrid.
   Dim thisDataSet As DataSet = CType(DataGrid1.DataSource, DataSet)

   ' Get the DataTableCollection through the Tables property.
   Dim tables As DataTableCollection = thisDataSet.Tables

   ' Get the index of the table named "Authors", if it exists.
   If tables.Contains("Authors") Then
      System.Diagnostics.Debug.WriteLine(tables.IndexOf("Authors"))
   End If
End Sub

備註

您可以使用 屬性來指定物件TableName的名稱DataTable。

當兩個或多個數據表具有相同名稱但不同的命名空間時，這個方法會傳回 -1。 如果資料表名稱無法完全與單一資料表相符 (即有任何名稱語意模糊)，呼叫就會失敗。

另請參閱

• IndexOf(DataTable)
• TableName
• Remove(DataTable)