UpdateCommand Property (SQLiteDataAdapter)
Gets or sets a SQLite statement used to update records in the data source.
'Declaration
Public Shadows Property UpdateCommand As SQLiteCommand
Property Value
A
SQLiteCommand used during an update operation to update records in the data source that correspond to modified rows in the
System.Data.DataSet.
The following example demonstrates how to retrieve and manipulate data using
SQLiteDataAdapter.
public void UseDataAdapter(SQLiteConnection sqConnection)
{
SQLiteDataAdapter myAdapter = new SQLiteDataAdapter("SELECT DeptNo, DName FROM Dept", sqConnection);
myAdapter.MissingSchemaAction = MissingSchemaAction.AddWithKey;
DataSet myDataSet = new DataSet();
myAdapter.Fill(myDataSet,"Departments");
myDataSet.Tables["Departments"].Rows[3]["DName"] = "Researches";
myAdapter.UpdateCommand = new SQLiteCommand("UPDATE Dept SET DeptNo = :DeptNo, DName = :DName " +
"WHERE DeptNo = :oldDeptNo", sqConnection);
myAdapter.UpdateCommand.Parameters.Add("DeptNo", SQLiteType.Int32, 0, "DeptNo");
myAdapter.UpdateCommand.Parameters.Add("DName", SQLiteType.Text, 15, "DName");
myAdapter.UpdateCommand.Parameters.Add("oldDeptNo", SQLiteType.Int32, 0, "DeptNo").SourceVersion = DataRowVersion.Original;
myAdapter.Update(myDataSet,"Departments");
//Get all data from all tables within the dataset
foreach(DataTable myTable in myDataSet.Tables)
{
foreach(DataRow myRow in myTable.Rows)
{
foreach (DataColumn myColumn in myTable.Columns)
{
Console.Write(myRow[myColumn]+"\t");
}
Console.WriteLine();
}
Console.WriteLine();
}
}
Public Sub UseDataAdapter(ByVal sqConnection As SQLiteConnection)
Dim myAdapter As SQLiteDataAdapter = New SQLiteDataAdapter("SELECT DeptNo, DName FROM Dept", sqConnection)
myAdapter.MissingSchemaAction = MissingSchemaAction.AddWithKey
Dim myDataSet As DataSet = New DataSet
myAdapter.Fill(myDataSet, "Departments")
myDataSet.Tables("Departments").Rows(3)("DName") = "Researches"
myAdapter.UpdateCommand = New SQLiteCommand("UPDATE Dept SET DeptNo = :DeptNo, DName = :DName " & _
"WHERE DeptNo = :oldDeptNo", sqConnection)
myAdapter.UpdateCommand.Parameters.Add("DeptNo", SQLiteType.Int32, 0, "DeptNo")
myAdapter.UpdateCommand.Parameters.Add("DName", SQLiteType.Text, 15, "DName")
myAdapter.UpdateCommand.Parameters.Add("oldDeptNo", SQLiteType.Int32, 0, "DeptNo").SourceVersion = DataRowVersion.Original
myAdapter.Update(myDataSet, "Departments")
Dim myTable As DataTable
Dim myRow As DataRow
Dim myColumn As DataColumn
' Get all data from all tables within the dataset
For Each myTable In myDataSet.Tables
For Each myRow In myTable.Rows
For Each myColumn In myTable.Columns
Console.Write(myRow(myColumn) & Chr(9))
Next myColumn
Console.WriteLine()
Next myRow
Console.WriteLine()
Next myTable
End Sub
Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2