Windows表单图表标签修改

时间:2015-08-08 13:57:49

标签: c# winforms windows-forms-designer

创建一个使用chart的Windows窗体应用程序。我想修改图表

  1. 如何编辑图表区域背景颜色(屏幕截图中的白色)
  2. 如何为每个酒吧应用不同的颜色。
  3. 如何格式化Y轴标签(需要将文件扩展名对齐左端,整数值对齐到右端)
  4. 这是我目前的截图

    enter image description here

    需要像这样更新我的屏幕

    enter image description here

    是否可以像这样对齐标签

    enter image description here

1 个答案:

答案 0 :(得分:3)

以下是一个例子:

enter image description here

要设置Chart的样式,请使用此选项:

// prepare:
chart1.Series.Clear();
Series S1 = chart1.Series.Add("S1");
ChartArea CA = chart1.ChartAreas[0];

// style type, font, color, axes
S1.ChartType = SeriesChartType.Bar;
CA.BackColor = Color.AliceBlue;
chart1.BackColor = CA.BackColor;
Font f = new Font("Consolas", 10f);
CA.AxisX.LabelStyle.Font = f;

S1.BackGradientStyle = GradientStyle.TopBottom;
CA.AxisX.MajorGrid.Enabled = false;
CA.AxisX.MajorTickMark.Enabled = false;
CA.AxisX.LineColor = Color.Transparent;

CA.AxisY.Enabled = AxisEnabled.False;
CA.AxisY.MajorGrid.Enabled = false;
CA.AxisY.MajorTickMark.Enabled = false;

要为个人DataPoints着色,您必须设置Color

S1.Points[0].Color = Color.YellowGreen;
S1.Points[1].Color = Color.YellowGreen;

要创建formatted标签,您可以创建字符串并在添加点时将它们用作(伪)X值:

string label = string.Format("{0,-11}{1, 7:0.0}%{2,8:##0.0}GB  ",
                t.Item1, t.Item2 * 100d / total, t.Item2) + "\u2001\u2001";
int idx = S1.Points.AddXY(label, t.Item2);

在这里,我使用Tuple<string, int>来保存我的数据。您需要根据数据源进行调整。请注意我如何计算总数中的百分比。

以下是我用于示例数据的完整代码:

List<Tuple<string, double>> data = new List<Tuple<string, double>>()
{
    new Tuple<string, double>( "0-1 months", 4 ),
    new Tuple<string, double>( "2-3 months", 14 ),
    new Tuple<string, double>( "4-11 months", 44 ),
    new Tuple<string, double>( "1-2 years", 23 ),
    new Tuple<string, double>( "3-5 years", 3 ),
    new Tuple<string, double>( "> 5 years", 100 ),

};

double total = data.Sum(x => x.Item2);

foreach (Tuple<string, double> t in data)
{
    string label = string.Format("{0,-11}{1, 7:0.0}%{2,8:##0.0}GB",
                   t.Item1, t.Item2 * 100d / total, t.Item2) + "\u2001\u2001";
    int i = S1.Points.AddXY(label, t.Item2);
    S1.Points[i].Font = f;
}

注意:

  • 要获得内部字符串对齐,您需要使用等宽字体,例如Consolas
  • 另请注意,您无法在一个标签内使用不同的字体或样式。
  • 我添加了两个m-space characters来创建标签和plotarea之间的距离。 (正常空格不会显示!)。

<强>更新

第二张图表图片显示SeriesChartType.Column。要插入新行,您需要做的就是插入一个\n字符,并确保有足够的空间。

棘手的部分是有一条不同颜色的线。标签无法做到这一点。

相反,你需要为每个数据点添加两个CustomLabels:第一个显示例如黑线。第二个可以有不同的ForeColor,并且在开头需要尽可能多\n,因为第一个有行。{/ p>

请注意CustomLabels位于两个位置之间的中间位置。所以我现在已经将DataPoints添加了实数,从0开始,作为X值,然后将CustomLabels置于中间位置..

enter image description here

    chart1.Series.Clear();
    Series S1 = chart1.Series.Add("S1");
    S1.ChartType = SeriesChartType.Column;
    ChartArea CA = chart1.ChartAreas[0];
    chart1.Legends.Clear();

    CA.BackColor = Color.AliceBlue;
    chart1.BackColor = Color.AliceBlue;
    Font f = new Font("Consolas", 9f);

    CA.AxisX.LabelStyle.Font = f;

    S1.BackGradientStyle = GradientStyle.LeftRight;
    CA.AxisX.MajorGrid.Enabled = false;
    CA.AxisX.MajorTickMark.Enabled = false;
    CA.AxisX.LineColor = Color.Transparent;

    CA.AxisY.Enabled = AxisEnabled.False;
    CA.AxisY.MajorGrid.Enabled = false;
    CA.AxisY.MajorTickMark.Enabled = false;

    CA.Position.X = 0f;

    List<Tuple<string, double>> data = new List<Tuple<string, double>>()
    {
        new Tuple<string, double>( "0-1 months", 4 ),
        new Tuple<string, double>( "2-3 months", 14 ),
        new Tuple<string, double>( "4-11 months", 44 ),
        new Tuple<string, double>( "1-2 years", 23 ),
        new Tuple<string, double>( "3-5 years", 3 ),
        new Tuple<string, double>( "> 5 years", 100 ),

    };

    double total = data.Sum(x => x.Item2);

    foreach (Tuple<string, double> t in data)
    {
        string label1 = string.Format("{0}\n{1:0.0}%", t.Item1, t.Item2 * 100d / total);
        string label2 = string.Format("\n\n{0:##0.0}GB", t.Item2);
        int i = S1.Points.AddXY(S1.Points.Count, t.Item2);
        S1.Points[i].Font = f;

        DataPoint dp = S1.Points[i];
        int v = (int)dp.YValues[0];
        CustomLabel cl = new CustomLabel();
        cl.Text = label1;
        cl.FromPosition = i - 0.5f;
        cl.ToPosition = i + 0.5f;

        CustomLabel cl2 = new CustomLabel();
        cl2.Text = label2;
        cl2.FromPosition = i -0.5f;
        cl2.ToPosition = i + 0.5f;

        cl2.ForeColor = Color.Green;
        CA.AxisX.CustomLabels.Add(cl);
        CA.AxisX.CustomLabels.Add(cl2);

    }
    S1.Points[0].Color = Color.YellowGreen;
    S1.Points[1].Color = Color.YellowGreen;