Gets an array of all DataRow objects that match the filter criteria, in the specified sort order.
(in System.Data.dll)
Visual Basic (Declaration)
Public Function Select ( _
filterExpression As String, _
sort As String _
) As DataRow()
Dim instance As DataTable
Dim filterExpression As String
Dim sort As String
Dim returnValue As DataRow()
returnValue = instance.Select(filterExpression, _
sort)
public DataRow[] Select(
string filterExpression,
string sort
)
public:
array<DataRow^>^ Select(
String^ filterExpression,
String^ sort
)
public function Select(
filterExpression : String,
sort : String
) : DataRow[]
To form the filterExpression argument, use the same rules for creating the DataColumn class's Expression property value. The Sort argument also uses the same rules for creating class's Expression strings.
The following example uses a filter expression to return an array of DataRow objects.
Private Sub GetRowsByFilter()
Dim table As DataTable = DataSet1.Tables(0)
' Presuming the DataTable has a column named Date.
Dim expression As String = "Date > 1/1/00"
' Sort descending by column named CompanyName.
Dim sortOrder As String = "CompanyName DESC"
Dim foundRows() As DataRow
' Use the Select method to find all rows matching the filter.
foundRows = table.Select(expression, sortOrder)
Dim i As Integer
' Print column 0 of each returned row.
For i = 0 to foundRows.GetUpperBound(0)
Console.WriteLine(foundRows(i)(0))
Next i
End Sub
private void GetRowsByFilter()
{
DataTable table = DataSet1.Tables["Orders"];
// Presuming the DataTable has a column named Date.
string expression = "Date > '1/1/00'";
// Sort descending by column named CompanyName.
string sortOrder = "CompanyName DESC";
DataRow[] foundRows;
// Use the Select method to find all rows matching the filter.
foundRows = table.Select(expression, sortOrder);
// Print column 0 of each returned row.
for(int i = 0; i < foundRows.Length; i ++)
{
Console.WriteLine(foundRows[i][0]);
}
}
Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC, Xbox 360, Zune
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
.NET Framework
Supported in: 3.5, 3.0, 2.0, 1.1, 1.0
.NET Compact Framework
Supported in: 3.5, 2.0, 1.0
XNA Framework
Supported in: 3.0, 2.0, 1.0
Reference
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