C# DataRow.ItemArray 屬性

DataRow.ItemArray 屬性
通過一個數組來擷取或設定此行的所有值。
命名空間:System.Data

程式集:System.Data（在 system.data.dll 中）

程式碼範例：

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]);        }    }}

異常：

異常類型	條件
ArgumentException	數組大於表中的列數。
InvalidCastException	數組中的值與其相應的 DataColumn 中的 DataType 不匹配。
ConstraintException	編輯破壞了約束。
ReadOnlyException	編輯試圖更改唯讀列的值。
NoNullAllowedException	編輯試圖將空值放在 DataColumn 對象的 AllowDBNull 為 false 的列中。
DeletedRowInaccessibleException	該行已被刪除。

DataRow.ItemArray 屬性原始碼實現：

public object[] ItemArray{get{int defaultRecord = this.GetDefaultRecord();object[] array = new object[this._columns.Count];for (int i = 0; i < array.Length; i++){DataColumn dataColumn = this._columns[i];array[i] = dataColumn[defaultRecord];}return array;}set{if (value == null){throw ExceptionBuilder.ArgumentNull("ItemArray");}if (this._columns.Count < value.Length){throw ExceptionBuilder.ValueArrayLength();}DataColumnChangeEventArgs dataColumnChangeEventArgs = null;if (this._table.NeedColumnChangeEvents){dataColumnChangeEventArgs = new DataColumnChangeEventArgs(this);}bool flag = this.BeginEditInternal();for (int i = 0; i < value.Length; i++){if (value[i] != null){DataColumn dataColumn = this._columns[i];if (-1L != this.rowID && dataColumn.ReadOnly){throw ExceptionBuilder.ReadOnly(dataColumn.ColumnName);}if (dataColumnChangeEventArgs != null){dataColumnChangeEventArgs.InitializeColumnChangeEvent(dataColumn, value[i]);this._table.OnColumnChanging(dataColumnChangeEventArgs);}if (dataColumn.Table != this._table){throw ExceptionBuilder.ColumnNotInTheTable(dataColumn.ColumnName, this._table.TableName);}if (-1L != this.rowID && dataColumn.ReadOnly){throw ExceptionBuilder.ReadOnly(dataColumn.ColumnName);}if (this.tempRecord == -1){this.BeginEditInternal();}object obj = (dataColumnChangeEventArgs != null) ? dataColumnChangeEventArgs.ProposedValue : value[i];if (obj == null){if (dataColumn.IsValueType){throw ExceptionBuilder.CannotSetToNull(dataColumn);}obj = DBNull.Value;}try{int proposedRecordNo = this.GetProposedRecordNo();dataColumn[proposedRecordNo] = obj;}catch (Exception e){if (ADP.IsCatchableOrSecurityExceptionType(e) && flag){this.CancelEdit();}throw;}this.LastChangedColumn = dataColumn;if (dataColumnChangeEventArgs != null){this._table.OnColumnChanged(dataColumnChangeEventArgs);}}}this.EndEdit();}}

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