DataTableCollection.Contains Method (String, String)

Gets a value that indicates whether a DataTable object with the specified name and table namespace exists in the collection.

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

public bool Contains(
	string name,
	string tableNamespace
)

Parameters

name
Type: System.String

The name of the DataTable to find.

tableNamespace
Type: System.String

The name of the DataTable namespace to look in.

Return Value

Type: System.Boolean
true if the specified table exists; otherwise false.

You specify the name of the DataTable object by using the TableName property. If you add a DataTable to the collection with the Add method, passing no arguments, the table is given a default name, based on the order in which the table was added ("Table1", "Table2", and so on).

NoteNote

Returns false when two or more tables have the same name but different namespaces. The call does not succeed if there is any ambiguity when matching a table name to exactly one table.

To get the index of a DataTable, use the IndexOf method.

The following example tests whether a table with the name "Suppliers" exists in the DataTableCollection.

private void TestForTableName()
{
    // Get the DataSet of a DataGrid.
    DataSet thisDataSet = (DataSet)DataGrid1.DataSource;

    // Get the DataTableCollection through the Tables property.
    DataTableCollection tablesCol = thisDataSet.Tables;

    // Check if the named table exists. 
    if (tablesCol.Contains("Suppliers")) 
        Console.WriteLine("Table named Suppliers exists");
}

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0

.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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