How to: Manipulate a Table's Columns through the Columns Property

Artykuł
02/04/2013

This example demonstrates some of the more common operations that can be performed on a table's columns through the Columns property.

Example

The following example creates a new table and then uses the Add method to add columns to the table's Columns collection.

            Dim tbl As New Table()
            Dim columnsToAdd As Integer = 4
            For x As Integer = 0 To columnsToAdd - 1
                tbl.Columns.Add(New TableColumn())
            Next x

Table tbl = new Table();
int columnsToAdd = 4;
for (int x = 0; x < columnsToAdd; x++)
    tbl.Columns.Add(new TableColumn());

The following example inserts a new TableColumn. The new column is inserted at index position 0, making it the new first column in the table.

Note

The TableColumnCollection collection uses standard zero-based indexing.

            tbl.Columns.Insert(0, New TableColumn())

tbl.Columns.Insert(0, new TableColumn());

The following example accesses some arbitrary properties on columns in the TableColumnCollection collection, referring to particular columns by index.

            tbl.Columns(0).Width = New GridLength(20)
            tbl.Columns(1).Background = Brushes.AliceBlue
            tbl.Columns(2).Width = New GridLength(20)
            tbl.Columns(3).Background = Brushes.AliceBlue

tbl.Columns[0].Width = new GridLength(20);
tbl.Columns[1].Background = Brushes.AliceBlue;
tbl.Columns[2].Width = new GridLength(20);
tbl.Columns[3].Background = Brushes.AliceBlue;

The following example gets the number of columns currently hosted by the table.

            Dim columns As Integer = tbl.Columns.Count

int columns = tbl.Columns.Count;

The following example removes a particular column by reference.

            tbl.Columns.Remove(tbl.Columns(3))

tbl.Columns.Remove(tbl.Columns[3]);

The following example removes a particular column by index.

            tbl.Columns.RemoveAt(2)

tbl.Columns.RemoveAt(2);

The following example removes all columns from the table's columns collection.

            tbl.Columns.Clear()

tbl.Columns.Clear();

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How to: Manipulate a Table's Columns through the Columns Property

Example

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