CODEWITHSUNDEEP
scrollzoomingmschart
Rohit T
Rohit T

Reputation: 11

How to solve scrolling size for MSchart controls graph c#

I made a graph using MSChart and I was able to implement the zooming ability.

The graph can zoom but the problem arises when I want to move around after I zoom. When I click up and down on the y axis scrollbar, the scrolling increment is fine. However, for the x axis scrollbar, the scrolling increment is horrible. It will always go the very end even though there is data in the middle.

I tried looking online for the solution but was out of luck

here is my code:

        // Chart area (where the axes and series are plotted)
        ChartArea chartArea = new ChartArea();
        chartArea.AxisX.Minimum = DateTime.MinValue.ToOADate();
        chartArea.AxisY.Minimum = 0;
        chartArea.AxisY.Maximum = 100;
        //chartArea.AxisY.IntervalAutoMode = IntervalAutoMode.VariableCount;
        chartArea.AxisX.Title = "Time";
        chartArea.AxisX.LabelStyle.Format = DEFAULT_TIME_FORMAT_STRING;
        chartArea.AxisY.LabelStyle.Format = "#########################";
        chartArea.AxisX.MajorGrid.LineDashStyle = ChartDashStyle.NotSet;
        chartArea.AxisY.MajorGrid.LineDashStyle = ChartDashStyle.NotSet;
        chartArea.BackColor = Color.Transparent;

        m_chart.ChartAreas.Add(chartArea);

        //add zoom-in features for x and y axis             
        m_chart.ChartAreas[0].CursorY.Interval = 0;
        m_chart.ChartAreas[0].CursorY.IsUserEnabled = true;
        m_chart.ChartAreas[0].CursorY.IsUserSelectionEnabled = true;
        m_chart.ChartAreas[0].AxisY.ScaleView.Zoomable = true;
        m_chart.ChartAreas[0].AxisY.ScrollBar.IsPositionedInside = true;

        m_chart.ChartAreas[0].CursorX.Interval = 0;
        //m_chart.ChartAreas[0].CursorX.AutoScroll = true;
        //m_chart.ChartAreas[0].AxisX.IntervalAutoMode = IntervalAutoMode.VariableCount;
        m_chart.ChartAreas[0].CursorX.IsUserEnabled = true;
        m_chart.ChartAreas[0].CursorX.IsUserSelectionEnabled = true;
        m_chart.ChartAreas[0].AxisX.ScaleView.Zoomable = true;
        m_chart.ChartAreas[0].AxisX.ScrollBar.IsPositionedInside = true;

I dont see what I am doing wrong

Upvotes: 1

Views: 6561

Answers (2)

RyanC
RyanC

Reputation: 31

Set the scaleview type to the appropriate time selection.

m_chart.ChartAreas[0].AxisX.ScaleView.SizeType = "Seconds";
m_chart.ChartAreas[0].AxisX.ScaleView.MinSizeType= "Seconds";
m_chart.ChartAreas[0].AxisX.ScaleView.SmallScrollMinSizeType= "Seconds";
m_chart.ChartAreas[0].AxisX.ScaleView.SmallScrollSizeType= "Seconds";

Upvotes: 1

korachetan
korachetan

Reputation: 1

Just change 

m_chart.ChartAreas[0].AxisX.ScrollBar.IsPositionedInside = false;

then the scroll bar will comes outside the chartarea and you will not face that problem.

Upvotes: 0

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