Hi.
I am trying to plot some values using LineChart but I have two issues:

a) Although I do use

lineChart.GridType = GridType.Crossed; 

I get same result as when using GridType.Vertical. How can I display both Vertical and Horizontal grid lines (i.e. Crossed Lines)? Do I miss something?

b) The code for Y-Axis is shown below (X-Axis is similar). What I'm trying to achieve is a maximum MaxYAxisNumbers = 20 number of horizontal grid lines, thus to display for the vertical range [0-144], ten grid lines, but not at fractional positions. E.g. I want [0, 7, 17, ..., 133]. However the following code, which depends on CustomLabelPosition.AutoScalePoints; leads to fractional grid lines [0, 7.2, 14.4, ..., 136.8]. From what I understand the "AutoScalePoints" places the grid lines at fractional positions that I can't affect.
Thus is there any way to place the grid lines at my custom position i.e. providing a List<double> somewhere as input?

// Axis - Y
const int MaxYAxisNumbers = 20
Axis axisY = new Axis();
axisY.MinValue = 0;
axisY.MaxValue = 144;
axisY.Title = "Items";
axisY.Interval = 1;
axisY.Tick = 1;
axisY.Tag = "Y-Axis";
axisY.TitleRotationAngle = 270;
double usedMaxYAxisNumbers = (double)MaxYAxisNumbers;

double diffDistanceY = axisY.MaxValue - axisY.MinValue;
if (diffDistanceY < (double)MaxYAxisNumbers)
		usedMaxYAxisNumbers = diffDistanceY;

double diffStepY = diffDistanceY / usedMaxYAxisNumbers;
List<string> axisListY = new List<string>();
{
		for (double idx = axisY.MinValue; idx < axisY.MaxValue; idx += diffStepY)
				axisListY.Add(idx.ToString());
}

axisY.IntervalCount = (int)usedMaxYAxisNumbers;
axisY.LabelType = LabelType.CustomText;
axisY.CustomLabelPosition = CustomLabelPosition.AutoScalePoints;
axisY.Labels = axisListY.AsReadOnly();
lineChart.YAxes.Add(axisY);
lineChart.GridType = GridType.Crossed;
 

Any help would be appreciated.
Thanks.

Hi,

Here is the link to download the updated assemblies:

https://mindfusion.eu/_temp/grid_custom.zip

We have added new member to the GridType enumeration called GridType.Custom. The XGridLines and YGridLines properties are arrays that expect the numeric values of the points that should mark the grid stripes and mark. Here is sample code:

lineChart1.GridFills.Clear();
lineChart1.GridFills.Add(new SolidColorBrush(Color.FromArgb(100, 255, 0, 0)));
lineChart1.GridFills.Add(new SolidColorBrush(Color.FromArgb(100, 0, 255, 0)));
lineChart1.GridFills.Add(new SolidColorBrush(Color.FromArgb(100, 0, 0, 255)));
lineChart1.GridFills.Add(new SolidColorBrush(Color.FromArgb(100, 153, 0, 204)));
lineChart1.GridFills.Add(new SolidColorBrush(Color.FromArgb(100, 102, 153, 0)));
                 

lineChart1.GridStrokes.Clear();
lineChart1.GridStrokes.Add(new SolidColorBrush(Colors.Purple));
lineChart1.GridStrokes.Add(new SolidColorBrush(Colors.Orange));
lineChart1.GridStrokes.Add(new SolidColorBrush(Colors.White));

lineChart1.GridStrokeThickness = 5;
lineChart1.GridType = GridType.Custom;

Let us know if it works OK and is what you need.

Kind Regards,
Iva

Hi Iva_P,

I downloaded the grid_custom.zip, but when I replace the dlls and I try to use lineChart.YGridLines as

DoubleCollection axisGridY = new DoubleCollection();
// ... Fill up data same as labels ...
lineChart.YGridLines = axisGridY;
 

I get an error:

'Error      CS1061      'LineChart' does not contain a definition for 'YGridLines' and no accessible extension method 'YGridLines' accepting a first argument of type 'LineChart' could be found (are you missing a using directive or an assembly reference?)      <filepath>      173      N/A'

Just to say I've downloaded and working on the 'MindFusion.Charting.Wpf.2.2.0' from the NuGet Packages. Thus I just replaced the .dlls in the folder:

packages\MindFusion.Charting.Wpf.2.2.0\lib\net40 with the ones that exist in the grid_custom.zip.

I noticed that there are no .xml files in the zipped file you uploaded but there are 3 xml in the NuGet package which has not been replaced by something new.

Should I use in some other way the grid_custom.zip's data?

Thanks

We expect to update the NuGet packages next week. I will post you a message when we've done it.