mschart

问题 I have WinForm with chart and database.Chart get data from database. If no data the chart isn't visible. I would like to show a message in the chart place.For example: "No data yet." Can I do it? if (chart1["Series1"].Points.Count == 0) { ??? } 回答1: ..show a message in the chart..Can I do it? Sure. There are in fact many ways, from setting the chart's Title to using the Paint event and DrawString or creating a TextAnnotation etc.. The two latter options are easy to center and both will keep

问题 I am trying to draw a vertical line that is anchored to a point. I tried to use the height of my Y axis which is fixed to draw the line, but it wasn't centered correctly. So right now I have an infinite line, but that I want is the line to just fill the graph like so VerticalLineAnnotation lineannot = new VerticalLineAnnotation(); lineannot.AnchorDataPoint = chart.Series[item].Points.Last(); lineannot.LineColor = Color.Red; lineannot.Width = 3; lineannot.Visible = true; lineannot.IsInfinitive

问题 Im trying to create a chart the has a base 10 logarithmic scale for the x axis with a range from 1 to 1000. I seem to be able create the axis during design time but whenever the form is loaded I get an error message saying "Chart Area Axes - A logarithmic scale cannot be used for this axis. Is this a limitation on the MSChart control? why am I not able to create a log scale on the X Axis? 回答1: It is because for a logarithm scale, the values must be greater than zero. Charting.CHart treats

问题 I am using VB 2008 with the Microsoft Chart Controls for .NET Framework. Using a pie chart, I would like to find the selected item when the chart is clicked or double clicked. I am have the click and doubleclick events as shown here, which I have confirmed is being hit, and the the eventarts contains the x,y position of the click. Private Sub Chart_DoubleClick(ByVal sender As Object, ByVal e As System.EventArgs) Private Sub Chart_Click(ByVal sender As Object, ByVal e As System.EventArgs) What

问题 I'm trying to get some pretty simple polar plotting going here in a sandbox app and am getting some very strange results. Basically, I'm trying to recreate the answer to this question (eventually it gets a bit more complicated, but if I can do this, I should be on my way). Here's some code of how I'm setting it up. List<DateTime> xValues = new List<DateTime>(); List<double> yValues = new List<double>(); DateTime now = new DateTime(2012, 3, 20, 11, 24, 24); DateTime then = now.AddHours(2.0);

问题 I have done like this for creating click event handler for one part of the chart using mschart control, the chart is like this and the code like this private void targetChartmouse_Click(object sender, MouseEventArgs e) { try { var pos = e.Location; var results = kpiChartControl.HitTest(pos.X, pos.Y, false, ChartElementType.DataPoint); foreach (var result in results) { if (result.ChartElementType == ChartElementType.DataPoint) { //do something.... } } } } It's working fine when we click on the

问题 I have a microsoft chart control and I use a StripLine . How do I make the StripLine appear in front of the data points. Currently the strip line is hidden behind some data. The chart is an area chart. 回答1: As far as I'm aware StripLine will always be drawn behind the data points. One way to fudge this howerver would be to use a PostPaint event handler and draw the rectangle yourself. inside the handler your can get drawing coordinates as follows private void chart_PostPaint(object sender,

问题 I have an asp.net bar chart that I'm trying to add cross hatching to one of the bars. I cannot figure out how to do it. I want to crosshatch the 4th bar (from the left) in the chart. I tried the following code below but it doesn't work. Chart1.Series["Actual"].Points[3].Color = ColorTranslator.FromHtml("#ffffff"); Chart1.Series["Actual"].Points[3].BorderColor = ColorTranslator.FromHtml("#d0d0d0"); Chart1.Series["Actual"].Points[3].BackSecondaryColor = ColorTranslator.FromHtml("#d0d0d0");

问题 HI i want to start bar from 10 rather than 0. is it possible and how? chart1.ChartArea["ChartArea1"].AxisY.IsStartedfromZero=false chart1.ChartArea["ChartArea1"].AxisY.minimum=10 //but this line replace 0 another command to bar start from 10 in ms chart. 回答1: you are probably using the the wrong ChartType , what your code does is shift the baseline from Zero and instead start from 10 I presume what you really want is a Range Bar chart wherein you will have 2 values per bar representing the

问题 I'd like to draw a radar chart using MS Chart control in a WinForms app. This chart contains data for 1 day, I have data for every seconds, so I have 86 400 x-y value pairs. X axis contains dates, y my int values. My test code is like this: var fromDate = new DateTime(DateTime.Now.Year, DateTime.Now.Month, DateTime.Now.Day, 0, 0, 0); var toDate = new DateTime(DateTime.Now.Year, DateTime.Now.Month, DateTime.Now.Day, 23, 59, 59); List<DateTime> xValues = new List<DateTime>(); List<double>