DataRow.ItemArray 属性

定义

命名空间:

System.Data

程序集:

netstandard.dll, System.Data.Common.dll

Source:

DataRow.cs

获取或设置此行通过数组的所有值。

public:
 property cli::array <System::Object ^> ^ ItemArray { cli::array <System::Object ^> ^ get(); void set(cli::array <System::Object ^> ^ value); };

public object?[] ItemArray { get; set; }

member this.ItemArray : obj[] with get, set

Public Property ItemArray As Object()

属性值

Object[]

类型的 Object数组。

例外

ArgumentException

数组大于表中的列数。

InvalidCastException

数组中的值与其各自的DataColumn值不匹配DataType。

ConstraintException

编辑中断了约束。

ReadOnlyException

编辑尝试更改只读列的值。

NoNullAllowedException

编辑尝试在对象false所在的AllowDBNullDataColumn列中放置 null 值。

DeletedRowInaccessibleException

已删除该行。

示例

以下示例演示如何使用 ItemArray 属性获取和设置值。

private void CreateRowsWithItemArray()
{
    // Make a DataTable using the function below.
    DataTable dt = MakeTableWithAutoIncrement();
    DataRow relation;
    // Declare the array variable.
    object [] rowArray = new object[2];
    // Create 10 new rows and add to DataRowCollection.
    for(int i = 0; i <10; i++)
    {
        rowArray[0]=null;
        rowArray[1]= "item " + i;
        relation = dt.NewRow();
        relation.ItemArray = rowArray;
        dt.Rows.Add(relation);
    }
    PrintTable(dt);
}

private DataTable MakeTableWithAutoIncrement()
{
    // Make a table with one AutoIncrement column.
    DataTable table = new DataTable("table");
    DataColumn idColumn = new DataColumn("id",
        Type.GetType("System.Int32"));
    idColumn.AutoIncrement = true;
    idColumn.AutoIncrementSeed = 10;
    table.Columns.Add(idColumn);

    DataColumn firstNameColumn = new DataColumn("Item",
        Type.GetType("System.String"));
    table.Columns.Add(firstNameColumn);
    return table;
}

private void PrintTable(DataTable table)
{
    foreach(DataRow row in table.Rows)
    {
        foreach(DataColumn column in table.Columns)
        {
            Console.WriteLine(row[column]);
        }
    }
}

Private Sub CreateRowsWithItemArray()
    ' Make a DataTable using the function below.
    Dim dt As DataTable = MakeTableWithAutoIncrement()
    Dim relation As DataRow

    ' Declare the array variable.
    Dim rowArray(1) As Object

    ' Create 10 new rows and add to DataRowCollection.
    Dim i As Integer
    For i = 0 to 9
       rowArray(0) = DBNull.Value
       rowArray(1)= "item " & i.ToString()
       relation = dt.NewRow()
       relation.ItemArray = rowArray
       dt.Rows.Add(relation)
    Next
    PrintTable(dt)
End Sub
 
Private Function MakeTableWithAutoIncrement() As DataTable
    ' Make a table with one AutoIncrement column.
    Dim table As New DataTable("table")
    Dim idColumn As New DataColumn("id", _
        Type.GetType("System.Int32"))
    idColumn.AutoIncrement = True
    idColumn.AutoIncrementSeed = 10
    table.Columns.Add (idColumn)
    
    Dim firstNameColumn As New DataColumn( _
        "Item", Type.GetType("System.String"))
    table.Columns.Add(firstNameColumn)
    MakeTableWithAutoIncrement = table
End Function
 
Private Sub PrintTable(table As DataTable)
    Dim row As DataRow
    Dim column As DataColumn
    For Each row in table.Rows
       For Each column in table.Columns
          Console.WriteLine(row(column))
       Next
    Next
End Sub

注解

可以使用此属性通过数组设置或获取此行的值。 如果使用此属性设置值，则数组的大小和顺序必须与列集合相同。 null传入ItemArray指示未指定任何值。

用户可以在 ColumnChanging 事件或 RowChanging 事件中生成异常。

另请参阅

• AcceptChanges()
• AutoIncrement
• DataColumn