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DataTable.Select Method (String)

Gets an array of all DataRow objects that match the filter criteria.

Namespace:  System.Data
Assembly:  System.Data (in System.Data.dll)

public DataRow[] Select(
	string filterExpression
)

Parameters

filterExpression
Type: System.String

The criteria to use to filter the rows. For examples on how to filter rows, see DataView RowFilter Syntax [C#].

Return Value

Type: System.Data.DataRow[]
An array of DataRow objects.

To create the filterExpression argument, use the same rules that apply to the DataColumn class's Expression property value for creating filters.

To ensure the proper sort order, specify sort criteria with Select or Select.

If the column on the filter contains a null value, it will not be part of the result.

The following example uses a filter expression to return an array of DataRow objects.

private void GetRowsByFilter()
{
    DataTable table = DataSet1.Tables["Orders"];
    // Presuming the DataTable has a column named Date. 
    string expression;
    expression = "Date > #1/1/00#";
    DataRow[] foundRows;

    // Use the Select method to find all rows matching the filter.
    foundRows = table.Select(expression);

    // Print column 0 of each returned row. 
    for(int i = 0; i < foundRows.Length; i ++)
    {
        Console.WriteLine(foundRows[i][0]);
    }
}

.NET Framework

Supported in: 4.6, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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