windowsforms-devexpress-dot-xtraverticalgrid-dot-events-dot-customdrawrowheaderindenteventargs-be73ffe7.md
Gets a collection of row indents that are going to be painted.
Namespace : DevExpress.XtraVerticalGrid.Events
Assembly : DevExpress.XtraVerticalGrid.v25.2.dll
NuGet Packages : DevExpress.Win.Navigation, DevExpress.Win.VerticalGrid
public Indents RowIndents { get; }
Public ReadOnly Property RowIndents As Indents
| Type | Description |
|---|---|
| DevExpress.XtraVerticalGrid.ViewInfo.Indents |
An Indents object representing the collection of painted row indents.
|
Each row header within a vertical grid contains indents. Indents are used to represent the data within the control in a tree like stucture. Indents are subdivided into two types (see the image below):
The RowIndents property provides access to the collection of painted row indents. Individual indents can be accessed using index notation.
The following sample code handles the VGridControlBase.CustomDrawRowHeaderCell and VGridControlBase.CustomDrawRowHeaderIndent events to custom paint the focused row header and its indents. If the focused row is a category row, it is painted in the default manner.
The image below shows the result.
using System.Drawing.Drawing2D;
using DevExpress.XtraVerticalGrid.ViewInfo;
using DevExpress.XtraVerticalGrid.Events;
private void vGridControl1_CustomDrawRowHeaderCell(object sender,
CustomDrawRowHeaderCellEventArgs e) {
if(e.Row.XtraRowTypeID != 0 && e.Focused) {
// Creates the brush which is used to fill the background of row headers.
using(var backBrush = new LinearGradientBrush(e.Bounds, Color.Orange,
e.Appearance.BackColor2, LinearGradientMode.Vertical))
e.Cache.FillRectangle(backBrush, e.Bounds);
// Paints the row header's caption.
e.Cache.DrawString(e.Caption, e.Appearance.Font, Brushes.DarkBlue,
e.CaptionRect, e.Appearance.GetStringFormat());
// Paints the row header's image.
e.Cache.DrawImage(imageList1.Images[0], e.ImageRect);
e.Handled = true;
}
}
private void vGridControl1_CustomDrawRowHeaderIndent(object sender,
CustomDrawRowHeaderIndentEventArgs e) {
VGridControl grid = sender as VGridControl;
if(e.Row.XtraRowTypeID == 0)
return;
if(e.Row == grid.FocusedRow) {
// Fills the category indent's background.
foreach(IndentInfo indInfo in e.CategoryIndents)
using(var categoryIndentBrush = new LinearGradientBrush(indInfo.Bounds,
indInfo.Style.BackColor, indInfo.Style.BackColor,
LinearGradientMode.Vertical))
e.Cache.FillRectangle(categoryIndentBrush, indInfo.Bounds);
// Fills the row indent's background.
if(e.RowIndents.Count - 1 > -1) {
for(int i = 0; i < e.RowIndents.Count - 1; i++)
using(var rowIndentBrush = new LinearGradientBrush(e.RowIndents[i].Bounds,
e.RowIndents[i].Style.BackColor, e.RowIndents[i].Style.BackColor2,
LinearGradientMode.Vertical))
e.Cache.FillRectangle(rowIndentBrush, e.RowIndents[i].Bounds);
// Creates the brush which is used to fill the background of row indents.
using(var backBrush = new LinearGradientBrush(e.Bounds, Color.Orange,
e.Appearance.BackColor2, LinearGradientMode.Vertical))
e.Cache.FillRectangle(backBrush, e.RowIndents[e.RowIndents.Count - 1].Bounds);
}
e.Handled = true;
}
}
Imports System.Drawing.Drawing2D
Imports DevExpress.XtraVerticalGrid.ViewInfo
Imports DevExpress.XtraVerticalGrid.Events
Private Sub VGridControl1_CustomDrawRowHeaderCell(ByVal sender As Object, _
ByVal e As CustomDrawRowHeaderCellEventArgs) Handles VGridControl1.CustomDrawRowHeaderCell
If e.Row.XtraRowTypeID <> 0 AndAlso e.Focused Then
' Creates the brush which is used to fill the background of row headers.
Using backBrush = New LinearGradientBrush(e.Bounds, Color.Orange, e.Appearance.BackColor2, LinearGradientMode.Vertical)
e.Cache.FillRectangle(backBrush, e.Bounds)
End Using
' Paints the row header's caption.
e.Cache.DrawString(e.Caption, e.Appearance.Font, Brushes.DarkBlue, e.CaptionRect, e.Appearance.GetStringFormat())
' Paints the row header's image.
e.Cache.DrawImage(imageList1.Images(0), e.ImageRect)
e.Handled = True
End If
End Sub
Private Sub VGridControl1_CustomDrawRowHeaderIndent(ByVal sender As Object, _
ByVal e As CustomDrawRowHeaderIndentEventArgs) _
Handles VGridControl1.CustomDrawRowHeaderIndent
Dim grid As VGridControl = TryCast(sender, VGridControl)
If e.Row.XtraRowTypeID = 0 Then
Return
End If
If e.Row = grid.FocusedRow Then
' Fills the category indent's background.
For Each indInfo As IndentInfo In e.CategoryIndents
Using categoryIndentBrush = New LinearGradientBrush(indInfo.Bounds, indInfo.Style.BackColor, indInfo.Style.BackColor, LinearGradientMode.Vertical)
e.Cache.FillRectangle(categoryIndentBrush, indInfo.Bounds)
End Using
Next indInfo
' Fills the row indent's background.
If e.RowIndents.Count - 1 > -1 Then
For i As Integer = 0 To e.RowIndents.Count - 2
Using rowIndentBrush = New LinearGradientBrush(e.RowIndents(i).Bounds, e.RowIndents(i).Style.BackColor, e.RowIndents(i).Style.BackColor2, LinearGradientMode.Vertical)
e.Cache.FillRectangle(rowIndentBrush, e.RowIndents(i).Bounds)
End Using
Next i
' Creates the brush which is used to fill the background of row indents.
Using backBrush = New LinearGradientBrush(e.Bounds, Color.Orange, e.Appearance.BackColor2, LinearGradientMode.Vertical)
e.Cache.FillRectangle(backBrush, e.RowIndents(e.RowIndents.Count - 1).Bounds)
End Using
End If
e.Handled = True
End If
End Sub
See Also
CustomDrawRowHeaderIndentEventArgs Class