Initializes a new instance of the DataRow class using the specified builder. For more information, see DataRow Deletion. By calling Delete, you can programmatically check which rows are marked for removal before actually deleting them. The actual removal occurs when you call AcceptChanges method. In contrast, Delete marks the DataRow for removal. The Remove method removes the row from the collection. You can delete a DataRow from the DataRowCollection by calling the Remove method of the DataRowCollection, or by calling the Delete method of the DataRow object. For more information about adding data to a DataTable, see Adding Data to a DataTable.
Finally, call the AcceptChanges method of the DataTable object to confirm the addition. After creating a new DataRow, use the Add method to add the new DataRow to the DataRowCollection. To create a new DataRow, use the NewRow method of the DataTable object. Use the HasVersion and IsNull properties to determine the status of a particular row value, and the RowState property to determine the state of the row relative to its parent DataTable. Use the overloaded Item property to return or set the value of a DataColumn. The DataRowCollection represents the actual DataRow objects in the DataTable, and the DataColumnCollection contains the DataColumn objects that describe the schema of the DataTable.
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Use the DataRow object and its properties and methods to retrieve and evaluate and insert, delete, and update the values in the DataTable. The DataRow and DataColumn objects are primary components of a DataTable. ' Create an array for DataColumn objects. Private Function MakeNamesTable() As DataTable ' Then add the new row to the collection. ' Use the MakeTable function below to create a new table. Create an array for DataColumn objects. LNameColumn.DataType = ("System.String") IdColumn.DataType = ("System.Int32") ĭataColumn fNameColumn = new DataColumn() įNameColumn.DataType = ("System.String") ĭataColumn lNameColumn = new DataColumn()
Add three column objects to the table. Create a new DataTable titled 'Names.'ĭataTable namesTable = new DataTable("Names") Then add the new row to the collection.įoreach(DataColumn column in table.Columns) Once a table has been created, use the Use the MakeTable function below to create a new table. The following example creates a new DataRow by calling the NewRow method of the DataTable object.
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