remove white spaces below winforms graph

Question

I have created a chart in winforms and host it in WPF using winformhost. When I am implementing this in wpf, there is a space below my graph. If I reduce the size of chart, chart becomes small. How to remove that space below the graph?

Here is my code.

XAML.cs

var chartArea = new ChartArea("EQGraph");

Chart chart1 = this.FindName("EQGraph") as Chart;
chart1.ChartAreas.Add("EQGraph");

chart1.Series.Add("Front Left");

chart1.ChartAreas[0].AxisX.Maximum = 20000;
chart1.ChartAreas[0].AxisX.Minimum = 10;
chart1.ChartAreas[0].AxisX.IsLogarithmic = true;

chart1.ChartAreas[0].AxisX.MinorGrid.Interval = 1;
chart1.ChartAreas[0].AxisX.MinorGrid.Enabled = true;

chart1.ChartAreas[0].AxisY.Maximum = 20;
chart1.ChartAreas[0].AxisY.Minimum = -50;
chart1.ChartAreas[0].AxisY.Interval = 5;

chart1.ChartAreas[0].AxisX.MinorGrid.LineDashStyle = System.Windows.Forms.DataVisualization.Charting.ChartDashStyle.DashDotDot;

chart1.ChartAreas[0].AxisY.MajorGrid.LineDashStyle = System.Windows.Forms.DataVisualization.Charting.ChartDashStyle.DashDotDot;

chart1.ChartAreas[0].AxisX.LabelStyle.Font = new System.Drawing.Font("Trebuchet MS", 10F, System.Drawing.FontStyle.Bold);
chart1.ChartAreas[0].AxisY.LabelStyle.Font = new System.Drawing.Font("Trebuchet MS", 10F, System.Drawing.FontStyle.Bold);

chart1.ChartAreas[0].AxisX.Title = "Frequency(Hz)";
chart1.ChartAreas[0].AxisY.Title = "Gain";

int[] xValuesFrontLeft = { 10, 100, 1000, 5000, 4200, 8499 };
int[] yValuesFrontLeft = { 16, 10, -5, -10, 35, -40 };
chart1.Series["Front Left"].Points.DataBindXY(xValuesFrontLeft, yValuesFrontLeft);

chart1.Series["Front Left"].ChartType = SeriesChartType.Spline;

XAML

<DockPanel Grid.Column="3" Grid.Row="1" Grid.RowSpan="9" Background="#FFFBF9F9">

  <WindowsFormsHost x:Name="host" Height="500">
    <winformchart:Chart x:Name="EQGraph" Dock="Fill">
      <winformchart:Chart.Series >
        <winformchart:Series Name="series" ChartType="Line"/>
      </winformchart:Chart.Series>
      <winformchart:Chart.ChartAreas>
        <winformchart:ChartArea/>
      </winformchart:Chart.ChartAreas>
    </winformchart:Chart>
  </WindowsFormsHost>

</DockPanel>

Answer 1

I don't think you need to create new ChartArea to place your graph, because your graph is placed inside WindowsFormsHost in XAML already, and it's docked, so it will be the same size as it's host. Use that chart like this:

// Remove these lines
// var chartArea = new ChartArea("EQGraph");
// Chart chart1 = this.FindName("EQGraph") as Chart;
// chart1.ChartAreas.Add("EQGraph");

// Now you will be adding values, series and properties to your graph inside WinFormsHost
Chart chart1 = EQGraph;

You could also replace chart1 with EQGraph inside your code directly, at all places:

EQGraph.Series.Add("Front Left");

EQGraph.ChartAreas[0].AxisX.Maximum = 20000;
EQGraph.ChartAreas[0].AxisX.Minimum = 10;
EQGraph.ChartAreas[0].AxisX.IsLogarithmic = true;

EQGraph.ChartAreas[0].AxisX.MinorGrid.Interval = 1;
EQGraph.ChartAreas[0].AxisX.MinorGrid.Enabled = true;

EQGraph.ChartAreas[0].AxisY.Maximum = 20;
EQGraph.ChartAreas[0].AxisY.Minimum = -50;
EQGraph.ChartAreas[0].AxisY.Interval = 5;

EQGraph.ChartAreas[0].AxisX.MinorGrid.LineDashStyle = System.Windows.Forms.DataVisualization.Charting.ChartDashStyle.DashDotDot;

EQGraph.ChartAreas[0].AxisY.MajorGrid.LineDashStyle = System.Windows.Forms.DataVisualization.Charting.ChartDashStyle.DashDotDot;

EQGraph.ChartAreas[0].AxisX.LabelStyle.Font = new System.Drawing.Font("Trebuchet MS", 10F, System.Drawing.FontStyle.Bold);
EQGraph.ChartAreas[0].AxisY.LabelStyle.Font = new System.Drawing.Font("Trebuchet MS", 10F, System.Drawing.FontStyle.Bold);

EQGraph.ChartAreas[0].AxisX.Title = "Frequency(Hz)";
EQGraph.ChartAreas[0].AxisY.Title = "Gain";

int[] xValuesFrontLeft = { 10, 100, 1000, 5000, 4200, 8499 };
int[] yValuesFrontLeft = { 16, 10, -5, -10, 35, -40 };
EQGraph.Series["Front Left"].Points.DataBindXY(xValuesFrontLeft, yValuesFrontLeft);

EQGraph.Series["Front Left"].ChartType =SeriesChartType.Spline;