DataGridViewColumnCollection

Wisej.Web.DataGridViewColumnCollection

Namespace: Wisej.Web

Assembly: Wisej.Framework (4.0.0.0)

• BaseCollection

  • DataGridViewColumnCollection

Represents a collection of DataGridViewColumn objects in a DataGridView control.

C#

public class DataGridViewColumnCollection : BaseCollection, IList, IList<DataGridViewColumn>, ICollection<DataGridViewColumn>, IEnumerable<DataGridViewColumn>

VB.NET

Public Class DataGridViewColumnCollection
    Inherits BaseCollection
    Implements IList, IList(Of DataGridViewColumn), ICollection(Of DataGridViewColumn), IEnumerable(Of DataGridViewColumn)

Constructors

DataGridViewColumnCollection(dataGrid)

Initializes a new instance of the DataGridViewColumnCollection class for the given DataGridView.

Name	Type	Description
dataGrid	DataGridView	The DataGridView that created this collection.

Properties

Item(index)

DataGridViewColumn: Returns the column at the given index in the collection.

Throws:

• ArgumentOutOfRangeExceptionindex is less than zero or greater than the number of columns in the collection minus one.

Item(name)

DataGridViewColumn: Returns the column of the given name in the collection.

Throws:

• ArgumentNullExceptionname is null.

List

IList: Returns the collection.

Methods

Add(column)

Adds the given DataGridViewColumn to the collection.

Parameter	Type	Description
column	DataGridViewColumn	The DataGridViewColumn to add.

Returns: Int32. The index of the column.

Throws:

• ArgumentNullExceptioncolumn is null.

• InvalidOperationException The associated DataGridView control is performing one of the following actions that temporarily prevents new columns from being added:

• Selecting all cells in the control.

• Clearing the selection.Updating column DisplayIndex property values. Or this method is being called from a handler for one of the following DataGridView events:

• CellEnter

• CellLeave

• CellValidating

• CellValidated

• RowEnter

• RowLeave

• RowValidated

• RowValidating

Add(name)

Adds a DataGridViewTextBoxColumn with the given column name to the collection.

Parameter	Type	Description
name	String	The name by which the column will be referred.

Returns: Int32. The index of the column.

Throws:

• InvalidOperationException The associated DataGridView control is performing one of the following actions that temporarily prevents new columns from being added:

• Selecting all cells in the control.

• Clearing the selection.Updating column DisplayIndex property values. Or this method is being called from a handler for one of the following DataGridView events:

• CellEnter

• CellLeave

• CellValidating

• CellValidated

• RowEnter

• RowLeave

• RowValidated

• RowValidating

Add(name, valueType)

Adds a DataGridViewTextBoxColumn with the given column name and call value type to the collection.

Parameter	Type	Description
name	String	The name by which the column will be referred.
valueType	Type	The Type of the values in the cells.

Returns: Int32. The index of the column.

Throws:

• InvalidOperationException The associated DataGridView control is performing one of the following actions that temporarily prevents new columns from being added:

• Selecting all cells in the control.

• Clearing the selection.Updating column DisplayIndex property values. Or this method is being called from a handler for one of the following DataGridView events:

• CellEnter

• CellLeave

• CellValidating

• CellValidated

• RowEnter

• RowLeave

• RowValidated

• RowValidating

Add(name, caption)

Adds a DataGridViewTextBoxColumn with the given column name and column header text to the collection.

Parameter	Type	Description
name	String	The name by which the column will be referred.
caption	String	The text for the column's header.

Returns: Int32. The index of the column.

Throws:

• InvalidOperationException The associated DataGridView control is performing one of the following actions that temporarily prevents new columns from being added:

• Selecting all cells in the control.

• Clearing the selection.Updating column DisplayIndex property values. Or this method is being called from a handler for one of the following DataGridView events:

• CellEnter

• CellLeave

• CellValidating

• CellValidated

• RowEnter

• RowLeave

• RowValidated

• RowValidating

Add(name, caption, valueType)

Adds a DataGridViewTextBoxColumn with the given column name, column header text, and cell value type to the collection.

Parameter	Type	Description
name	String	The name by which the column will be referred.
caption	String	The text for the column's header.
valueType	Type	The Type of the values in the cells.

Returns: Int32. The index of the column.

Throws:

• InvalidOperationException The associated DataGridView control is performing one of the following actions that temporarily prevents new columns from being added:

• Selecting all cells in the control.

• Clearing the selection.Updating column DisplayIndex property values. Or this method is being called from a handler for one of the following DataGridView events:

• CellEnter

• CellLeave

• CellValidating

• CellValidated

• RowEnter

• RowLeave

• RowValidated

• RowValidating

AddRange(newColumns)

Adds a range of columns to the collection.

Parameter	Type	Description
newColumns	DataGridViewColumn[]	An array of DataGridViewColumn objects to add.

Throws:

• ArgumentNullExceptionnewColumns is null.

• InvalidOperationException The associated DataGridView control is performing one of the following actions that temporarily prevents new columns from being added:

• Selecting all cells in the control.

• Clearing the selection.Updating column DisplayIndex property values. Or this method is being called from a handler for one of the following DataGridView events:

• CellEnter

• CellLeave

• CellValidating

• CellValidated

• RowEnter

• RowLeave

• RowValidated

• RowValidating

Clear()

Clears the collection.

Throws:

• InvalidOperationException The associated DataGridView control is performing one of the following actions that temporarily prevents new columns from being added: - Selecting all cells in the control. - Clearing the selection.Updating column DisplayIndex property values. Or this method is being called from a handler for one of the following DataGridView events: - CellEnter - CellLeave - CellValidating - CellValidated - RowEnter - RowLeave - RowValidated - RowValidating

Clear(dispose)

Clears the collection and disposes the columns.

Parameter	Type	Description
dispose	Boolean

Contains(column)

Determines whether the collection contains the given DataGridViewColumn.

Parameter	Type	Description
column	DataGridViewColumn	The DataGridViewColumn to look for.

Returns: Boolean. true if the given column is in the collection; otherwise, false.

Contains(name)

Determines whether the collection contains the given DataGridViewColumn.

Parameter	Type	Description
name	String	The name of the column to look for.

Returns: Boolean. true if the given column is in the collection; otherwise, false.

CopyTo(array, index)

Copies the items from the collection to the given array.

Parameter	Type	Description
array	DataGridViewColumn[]	The destination DataGridViewColumn array.
index	Int32	The index of the destination array at which to start copying.

GetColumnCount(includeFilter)

Returns the number of columns that match the includeFilter .

Parameter	Type	Description
includeFilter	DataGridViewElementStates	A combination of the DataGridViewElementStates values for inclusion.

Returns: Int32. The number of columns that match the filter.

Throws:

• ArgumentExceptionincludeFilter is not a valid combination of DataGridViewElementStates values.

GetColumnsWidth(includeFilter)

Returns the width, in pixels, required to display all of the columns that meet the includeFilter .

Parameter	Type	Description
includeFilter	DataGridViewElementStates	A combination of the DataGridViewElementStates values for inclusion.

Returns: Int32. The width, in pixels, that is necessary to display all of the columns that match the filter.

Throws:

• ArgumentExceptionincludeFilter is not a valid combination of DataGridViewElementStates values.

GetFirstColumn(includeFilter, excludeFilter)

Returns the first DataGridViewColumn in display order that matches the includeFilter and excludeFilter .

Parameter	Type	Description
includeFilter	DataGridViewElementStates	A combination of the DataGridViewElementStates values for inclusion.
excludeFilter	DataGridViewElementStates	A combination of the DataGridViewElementStates values for exclusion.

Returns: DataGridViewColumn. The first DataGridViewColumn in display order that matches the given filters, or null if no column is found.

Throws:

• ArgumentException At least one of the filter values is not a valid combination of DataGridViewElementStates values.

GetLastColumn(includeFilter, excludeFilter)

Returns the last DataGridViewColumn in display order that matches the includeFilter and excludeFilter .

Parameter	Type	Description
includeFilter	DataGridViewElementStates	A combination of the DataGridViewElementStates values for inclusion.
excludeFilter	DataGridViewElementStates	A combination of the DataGridViewElementStates values for exclusion.

Returns: DataGridViewColumn. The last displayed DataGridViewColumn in display order that matches the specified filters, or null if no column is found.

Throws:

• ArgumentException At least one of the filter values is not a valid combination of DataGridViewElementStates values.

GetNextColumn(startColumn, includeFilter, excludeFilter)

Returns the first DataGridViewColumn after the given column in display order that matches the includeFilter and excludeFilter .

Parameter	Type	Description
startColumn	DataGridViewColumn	The column from which to start searching for the next column.
includeFilter	DataGridViewElementStates	A combination of the DataGridViewElementStates values for inclusion.
excludeFilter	DataGridViewElementStates	A combination of the DataGridViewElementStates values for exclusion.

Returns: DataGridViewColumn. The next DataGridViewColumn that matches the filters, or null if no column is found.

Throws:

• ArgumentNullExceptionstartColumn is null.

• ArgumentException At least one of the filter values is not a valid combination of DataGridViewElementStates values.

GetPreviousColumn(startColumn, includeFilter, excludeFilter)

Returns the last DataGridViewColumn prior to the given column in display order that matches the includeFilter and excludeFilter .

Parameter	Type	Description
startColumn	DataGridViewColumn	The column from which to start searching for the previous column.
includeFilter	DataGridViewElementStates	A combination of the DataGridViewElementStates values for inclusion.
excludeFilter	DataGridViewElementStates	A combination of the DataGridViewElementStates values for exclusion.

Returns: DataGridViewColumn. The previous column that matches the given filters, or null if no column is found.

Throws:

• ArgumentNullExceptionstartColumn is null.

• ArgumentException At least one of the filter values is not a valid combination of DataGridViewElementStates values.

IndexOf(column)

Returns the index of the given DataGridViewColumn in the collection.

Parameter	Type	Description
column	DataGridViewColumn	The DataGridViewColumn to return the index of.

Returns: Int32. The index of the given DataGridViewColumn.

IndexOf(name)

Returns the index of the DataGridViewColumn with the specified name from the collection.

Parameter	Type	Description
name	String	The name of the column to find.

Returns: Int32. The index of the given DataGridViewColumn.

Throws:

• ArgumentNullExceptionname is null.

Insert(index, column)

Inserts a DataGridViewColumn at the given index in the collection.

Parameter	Type	Description
index	Int32	The zero-based index at which to insert the given column.
column	DataGridViewColumn	The DataGridViewColumn to insert.

Throws:

• ArgumentNullExceptioncolumn is null.

• InvalidOperationException The associated DataGridView control is performing one of the following actions that temporarily prevents new columns from being added:

• Selecting all cells in the control

• Clearing the selection

• Updating a column's DisplayIndex property value or this method is being called from a handler for one of the following DataGridView events:

• CellEnter

• CellLeave

• CellValidating

• CellValidated

• RowEnter

• RowLeave

• RowValidated

• RowValidating

or column already belongs to a DataGridView control; or the column 's SortMode property value is Automatic and the SelectionMode property value is FullColumnSelect or ColumnHeaderSelect. Use the control's BeginInit and EndInit methods to temporarily set conflicting property values; or the column 's InheritedAutoSizeMode property value is ColumnHeader and the ColumnHeadersVisible property value is false; or column has an InheritedAutoSizeMode property value of Fill and a Frozen property value of true; or column has DisplayIndex and Frozen property values that would display it among a set of adjacent columns with the opposite Frozen property value; or the DataGridView control contains at least one row and column has a CellType property value of null.

OnCollectionChanged(action, element)

Fires the CollectionChanged event.

Parameter	Type	Description
action	CollectionChangeAction	One of CollectionChangeAction indicating the reason the collection has changed.
element	Object	The element that was added or removed from the collection, or null.

Remove(column)

Removes the specified DataGridViewColumn from the collection.

Parameter	Type	Description
column	DataGridViewColumn	The column to delete.

Throws:

• ArgumentExceptioncolumn is not in the collection.

• ArgumentNullExceptioncolumn is null.

• InvalidOperationException The associated DataGridView control is performing one of the following actions that temporarily prevents new columns from being added:

• Selecting all cells in the control

• Clearing the selection

• Updating a column's DisplayIndex property value or this method is being called from a handler for one of the following DataGridView events:

• CellEnter

• CellLeave

• CellValidating

• CellValidated

• RowEnter

• RowLeave

• RowValidated

• RowValidating

Remove(name)

Removes the DataGridViewColumn with the specified name from the collection.

Parameter	Type	Description
name	String	The name of the column to delete.

Throws:

• ArgumentExceptionname does not match the name of any column in the collection.

• ArgumentNullExceptionname is null.

• InvalidOperationException The associated DataGridView control is performing one of the following actions that temporarily prevents new columns from being added:

• Selecting all cells in the control

• Clearing the selection

• Updating a column's DisplayIndex property value or this method is being called from a handler for one of the following DataGridView events:

• CellEnter

• CellLeave

• CellValidating

• CellValidated

• RowEnter

• RowLeave

• RowValidated

• RowValidating

RemoveAt(index)

Removes the DataGridViewColumn at the given index in the collection.

Parameter	Type	Description
index	Int32	The index of the column to delete.

Throws:

• ArgumentOutOfRangeExceptionindex is less than zero or greater than the number of columns in the control minus one.

• InvalidOperationException The associated DataGridView control is performing one of the following actions that temporarily prevents new columns from being added:

• Selecting all cells in the control

• Clearing the selection

• Updating a column's DisplayIndex property value or this method is being called from a handler for one of the following DataGridView events:

• CellEnter

• CellLeave

• CellValidating

• CellValidated

• RowEnter

• RowLeave

• RowValidated

• RowValidating

SetColumnIndex(column, newIndex)

Moves the specified column to the new newIndex .

Parameter	Type	Description
column	DataGridViewColumn	Column to move to the new newIndex .
newIndex	Int32	New index and display index of the column .

This method updates both the column's index in the column collection and the display index without firing the ColumnDisplayIndexChanged event.

Events

CollectionChanged

CollectionChangeEventHandler Fired when the collection changes.