TimeSpanChartRangeControlClientGridOptions.SnapAlignment Property
Specifies the measurement unit to which selection thumbs of the range control are snapped.
Namespace: DevExpress.XtraEditors
Assembly: DevExpress.XtraEditors.v20.2.dll
NuGet Package: DevExpress.Win.Navigation
Declaration
[XtraSerializableProperty]
public RangeControlTimeSpanGridAlignment SnapAlignment { get; set; }Property Value
| Type | Description |
|---|---|
| RangeControlTimeSpanGridAlignment | A RangeControlTimeSpanGridAlignment enumeration value that represents the alignment interval of selection thumbs. |
Available values:
| Name | Description |
|---|---|
| Millisecond | Specifies a millisecond as the time-span unit to which chart grid lines should be aligned. |
| Second | Specifies a second as the time-span unit to which chart gridlines should be aligned. |
| Minute | Specifies a minute as the time-span unit to which chart grid lines should be aligned. |
| Hour | Specifies an hour as the time-span unit to which chart grid lines should be aligned. |
| Day | Specifies a day as the time-span unit to which chart gridlines should be aligned. |
Property Paths
You can access this nested property as listed below:
| Object Type | Path to SnapAlignment |
|---|---|
| TimeSpanChartRangeControlClient |
|
Remarks
Use the SnapAlignment property to snap the selection thumbs to the range interval when dragging them in the range control’s viewport.
Example
This example demonstrates how to configure a range control with the time-span chart client to display a chart with time-span data in the range control’s background.
In order to provide data to a chart time-span range control client, access the ChartRangeControlClientDataProvider object using the ChartRangeControlClientBase.DataProvider property and assign a data source to the ChartRangeControlClientDataProvider.DataSource property. Then specify the required data fields via the ChartRangeControlClientDataProvider.ArgumentDataMember, ChartRangeControlClientDataProvider.ValueDataMember, and ChartRangeControlClientDataProvider.SeriesDataMember (optional) properties.
In the current example, a time-span chart client is bound to a simple data table containing three columns (“Argument”, “Value”, and “Series”).
In addition, this example shows how to customize chart client common settings (e.g., change the time-span range, customize template view and grid options).
using DevExpress.XtraEditors;
using System;
using System.Data;
using System.Drawing;
namespace TimeSpanChartRangeClient {
public partial class Form1 : XtraForm {
public Form1() {
InitializeComponent();
// Assign a time-span chart client to the Range control.
rangeControl1.Client = timeSpanChartRangeControlClient1;
// Generate a data table and bind the time-span client to it.
timeSpanChartRangeControlClient1.DataProvider.DataSource = CreateChartData(100, 2);
// Specify data members to bind the client.
timeSpanChartRangeControlClient1.DataProvider.ArgumentDataMember = "Argument";
timeSpanChartRangeControlClient1.DataProvider.ValueDataMember = "Value";
timeSpanChartRangeControlClient1.DataProvider.SeriesDataMember = "Series";
// Specify the chart range control client view.
AreaChartRangeControlClientView areaView = new AreaChartRangeControlClientView();
timeSpanChartRangeControlClient1.DataProvider.TemplateView = areaView;
// Customize the area view appearance.
areaView.AreaOpacity = 90;
areaView.Color = Color.Aqua;
areaView.ShowMarkers = true;
areaView.MarkerSize = 5;
areaView.MarkerColor = Color.Red;
// Format labels of the time-span chart range control client.
timeSpanChartRangeControlClient1.GridOptions.LabelFormat = "c";
// Specify the palette name to get a nice-looking chart.
timeSpanChartRangeControlClient1.PaletteName = "Office";
// Customize grid alignment, grid spacing, snap spacing and snap alignment of the chart range control client.
timeSpanChartRangeControlClient1.GridOptions.GridAlignment = RangeControlTimeSpanGridAlignment.Hour;
timeSpanChartRangeControlClient1.GridOptions.GridSpacing = 1;
timeSpanChartRangeControlClient1.GridOptions.SnapSpacing = 1;
timeSpanChartRangeControlClient1.GridOptions.SnapAlignment = RangeControlTimeSpanGridAlignment.Hour;
// Change the time-span range of the chart range control client.
timeSpanChartRangeControlClient1.Range.Min = TimeSpan.FromHours(9);
timeSpanChartRangeControlClient1.Range.Max = TimeSpan.FromHours(18);
}
private DataTable CreateChartData(int pointCount, int seriesCount) {
// Create an empty table.
DataTable table = new DataTable("Table1");
// Add three columns to the table.
table.Columns.Add("Argument", typeof(TimeSpan));
table.Columns.Add("Value", typeof(Double));
table.Columns.Add("Series", typeof(string));
// Add data rows to the table.
Random rand = new Random(10);
DataRow row = null;
double value = 0;
for (int seriesIndex = 0; seriesIndex < seriesCount; seriesIndex++) {
for (int pointIndex = 0; pointIndex < pointCount; pointIndex++) {
value += (rand.NextDouble() - 0.3);
row = table.NewRow();
row["Argument"] = TimeSpan.FromMinutes(pointIndex * 30);
row["Value"] = Math.Sin(pointIndex) + value;
row["Series"] = seriesIndex.ToString();
table.Rows.Add(row);
}
}
return table;
}
}
}