Represents an in-memory cache of data with connected model support.
This sample shows how to use DbDataSet. The routine accepts DbDataSet-compatible object and connection string. After
Devart.Data.SqlServer.SqlDataTables were created and populated, they were added to DataTableCollection of DbDataSet, and DataRelation was created to link tables.
pubic void FillDataSet(DbDataSet dataSet, string connStr) {
// retrieving data from DEPT table
SqlDataTable dept = new SqlDataTable("select * from dept", connStr);
dept.FetchAll = true;
dept.Active = true;
// retrieving data from EMP table
SqlDataTable emp = new SqlDataTable("select * from emp", connStr);
emp.FetchAll = true;
emp.Active = true;
// adding data tables to SqlDataSet
dataSet.Tables.Add(dept);
dataSet.Tables.Add(emp);
// linking tables to allow navigation from parent table rows
// to corresponding child table rows
DataColumn parentColumn = dataSet.Tables["DEPT"].Columns["DEPTNO"];
DataColumn childColumn = dataSet.Tables["EMP"].Columns["DEPTNO"];
DataRelation relation = new System.Data.DataRelation("DeptsEmps",
parentColumn, childColumn);
dataSet.Relations.Add(relation);
}
Public Sub FillDataSet(ByRef dataSet As DbDataSet, ByVal connStr As String)
' retrieving data from DEPT table
Dim dept As New SqlDataTable("select * from dept", connStr)
dept.FetchAll = True
dept.Active = True
' retrieving data from EMP table
Dim emp As New SqlDataTable("select * from emp", connStr)
emp.FetchAll = True
emp.Active = True
' adding data tables to SqlDataSet
dataSet.Tables.Add(dept)
dataSet.Tables.Add(emp)
' linking tables to allow navigation from parent table rows
' to corresponding child table rows
Dim parentColumn As DataColumn = dataSet.Tables("DEPT").Columns("DEPTNO")
Dim childColumn As DataColumn = dataSet.Tables("EMP").Columns("DEPTNO")
Dim relation As New System.Data.DataRelation("DeptsEmps", parentColumn, childColumn)
dataSet.Relations.Add(relation)
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