Question

图表类型：https://msdn.microsoft.com/en-us/library/system.windows.forms.datavisualization.charting.chart(v=vs.110).aspx

案例：通过datagridview创建图表。

Datagridview代码（有效）：

//Datagrid
data.Location = new Point(200, 75);
data.Size = new Size(600, 400);
data.BackgroundColor = Color.White;
data.Font = new Font("Times New Roman", 14.0f);

//Columns
data.ColumnCount = 2;
data.ColumnHeadersVisible = true;
DataGridViewCellStyle columnHeaderStyle = new DataGridViewCellStyle();
columnHeaderStyle.BackColor = Color.White;
columnHeaderStyle.Font = new Font("Verdana", 10, FontStyle.Bold);
data.ColumnHeadersDefaultCellStyle = columnHeaderStyle;

// Set the column header names.
data.Columns[0].Name = "ID";
data.Columns[1].Name = "Value";

//Width of  columns
DataGridViewColumn column = data.Columns[0];
column.Width = 279;
DataGridViewColumn column1 = data.Columns[1];
column1.Width = 278;

//Add datagridview
tabpage2.Controls.Add(data);

datagridview的图片： Datagridview

为了测试我到目前为止已经得到了这个：

如果点击按钮，此代码会更新图表并更新。

private void createChart()
{
    chart.Size = new Size(600, 400);
    chart.Location = new Point(100, 100);
    chart.BackColor = Color.Blue;
    chart.BorderlineColor = Color.Black;
    chart.Series.Add("test");
    chart.Series["test"].ChartType = SeriesChartType.Bar;

    Button button = new Button();
    button.Size = new Size(50,50);
    button.Text = "moi";
    button.Location = new Point(0,0);
    button.Click += (sender, args) =>
    {
        updateChart();
    };
    tabpage3.Controls.Add(button);
    tabpage3.Controls.Add(chart);
}

此方法更新图表：

private void updateChart()
{
    chart.Series[0] = new Series();
    chart.Series[0].XValueMember = data.Columns[0].DataPropertyName;
    chart.Series[0].YValueMembers = data.Columns[1].DataPropertyName;
    chart.DataSource = data.DataSource;
}

我想获得这些值的条形图。

我之前从未在C＃中使用过图表，感谢您的帮助！

创建datagridview图表

0 个答案: