officefileapi-devexpress-dot-spreadsheet-68104977.md
A collection of columns in a table.
Namespace : DevExpress.Spreadsheet
Assembly : DevExpress.Spreadsheet.v25.2.Core.dll
NuGet Package : DevExpress.Spreadsheet.Core
public interface TableColumnCollection :
ISimpleCollection<TableColumn>,
IEnumerable<TableColumn>,
IEnumerable,
ICollection
Public Interface TableColumnCollection
Inherits ISimpleCollection(Of TableColumn),
IEnumerable(Of TableColumn),
IEnumerable,
ICollection
The following members return TableColumnCollection objects:
The TableColumnCollection collection contains TableColumn objects and is available via the Table.Columns property. To add a new column to the table, use the TableColumnCollection.Add method. To remove a column from the table, use the TableColumn.Delete method.
This example demonstrates how to create a table from a range of cells. The sample range includes a list of products and invoice information on each product: price, quantity and discount.
The resulting table will provide an additional column to calculate the amount per product, and an additional row to show the total amount. Follow the steps below:
Create a Table
Format the Table
Table Columns
Table Header Row
Calculated Column
Table Total Row
Total Row Function
Table Ranges and Data Ranges
The image below shows the results.
' Insert a table in the worksheet.
Dim table As Table = worksheet.Tables.Add(worksheet("B2:F5"), True)
' Format the table by applying a built-in table style.
table.Style = workbook.TableStyles(BuiltInTableStyleId.TableStyleMedium27)
' Access table columns and name them.
Dim productColumn As TableColumn = table.Columns(0)
productColumn.Name = "Product"
Dim priceColumn As TableColumn = table.Columns(1)
priceColumn.Name = "Price"
Dim quantityColumn As TableColumn = table.Columns(2)
quantityColumn.Name = "Quantity"
Dim discountColumn As TableColumn = table.Columns(3)
discountColumn.Name = "Discount"
Dim amountColumn As TableColumn = table.Columns(4)
amountColumn.Name = "Amount"
' Set the formula to calculate the amount per product
' and display results in the "Amount" column.
amountColumn.Formula = "=[Price]*[Quantity]*(1-[Discount])"
' Display the total row in the table.
table.ShowTotals = True
' Set the label and function to display the sum of the "Amount" column.
discountColumn.TotalRowLabel = "Total:"
amountColumn.TotalRowFunction = TotalRowFunction.Sum
' Specify the number format for each column.
priceColumn.DataRange.NumberFormat = "$#,##0.00"
discountColumn.DataRange.NumberFormat = "0.0%"
amountColumn.Range.NumberFormat = "$#,##0.00;$#,##0.00;"""";@"
' Specify horizontal alignment for header and total rows of the table.
table.HeaderRowRange.Alignment.Horizontal = SpreadsheetHorizontalAlignment.Center
table.TotalRowRange.Alignment.Horizontal = SpreadsheetHorizontalAlignment.Center
' Specify horizontal alignment to display data in all columns except the first one.
For i As Integer = 1 To table.Columns.Count - 1
table.Columns(i).DataRange.Alignment.Horizontal = SpreadsheetHorizontalAlignment.Center
Next i
' Set the width of table columns.
table.Range.ColumnWidthInCharacters = 10
// Insert a table in the worksheet.
Table table = worksheet.Tables.Add(worksheet["B2:F5"], true);
// Format the table by applying a built-in table style.
table.Style = workbook.TableStyles[BuiltInTableStyleId.TableStyleMedium27];
// Access table columns and name them.
TableColumn productColumn = table.Columns[0];
productColumn.Name = "Product";
TableColumn priceColumn = table.Columns[1];
priceColumn.Name = "Price";
TableColumn quantityColumn = table.Columns[2];
quantityColumn.Name = "Quantity";
TableColumn discountColumn = table.Columns[3];
discountColumn.Name = "Discount";
TableColumn amountColumn = table.Columns[4];
amountColumn.Name = "Amount";
// Set the formula to calculate the amount per product
// and display results in the "Amount" column.
amountColumn.Formula = "=[Price]*[Quantity]*(1-[Discount])";
// Display the total row in the table.
table.ShowTotals = true;
// Set the label and function to display the sum of the "Amount" column.
discountColumn.TotalRowLabel = "Total:";
amountColumn.TotalRowFunction = TotalRowFunction.Sum;
// Specify the number format for each column.
priceColumn.DataRange.NumberFormat = "$#,##0.00";
discountColumn.DataRange.NumberFormat = "0.0%";
amountColumn.Range.NumberFormat = "$#,##0.00;$#,##0.00;\"\";@";
// Specify horizontal alignment for header and total rows of the table.
table.HeaderRowRange.Alignment.Horizontal = SpreadsheetHorizontalAlignment.Center;
table.TotalRowRange.Alignment.Horizontal = SpreadsheetHorizontalAlignment.Center;
// Specify horizontal alignment to display data in all columns except the first one.
for (int i = 1; i < table.Columns.Count; i++)
{
table.Columns[i].DataRange.Alignment.Horizontal = SpreadsheetHorizontalAlignment.Center;
}
// Set the width of table columns.
table.Range.ColumnWidthInCharacters = 10;
See Also