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DataTableCollection.IndexOf Method (String)

Gets the index in the collection of the DataTable object with the specified name.

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

public int IndexOf(
	string tableName
)

Parameters

tableName
Type: System.String

The name of the DataTable object to look for.

Return Value

Type: System.Int32
The zero-based index of the DataTable with the specified name, or -1 if the table does not exist in the collection.
NoteNote

Returns -1 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.

You specify the name of the DataTable object by using the TableName property.

The following example returns the index of a named table in the DataTableCollection.

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

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

    // Get the index of the table named "Authors", if it exists.
    if (tables.Contains("Authors"))
        System.Diagnostics.Debug.WriteLine(tables.IndexOf("Authors"));
}

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

XNA Framework

Supported in: 3.0, 2.0, 1.0
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