一、目标样式
我们要实现上图中的效果,需要如下的操作:
1.从工具栏上的”Smobiler Components”拖动一个PieChart控件到窗体界面上
2.修改PieChart的属性
a.CenterText属性
在表中间显示文字“1236.00 消费金额”,如图1
b.DefaultColors属性
打开集合编辑器,并点击添加,如图2、图3
图1 | 图2 | 图3 |
c.Load事件(添加数据)
VB: Private Sub TestChart2_Load(sender As Object, e As EventArgs) Handles MyBase.Load Dim matTable As New DataTable matTable.Columns.Add("XMember", GetType(String)) matTable.Columns.Add("YMember", GetType(Integer)) For i As Integer = 1 To 4 Step 1 Dim row As DataRow = matTable.NewRow matTable.Rows.Add(row) Next matTable.Rows(0)("XMember") = "餐饮" matTable.Rows(1)("XMember") = "住宿" matTable.Rows(2)("XMember") = "长途" matTable.Rows(3)("XMember") = "通讯" matTable.Rows(0)("YMember") = 740.0 matTable.Rows(1)("YMember") = 280.0 matTable.Rows(2)("YMember") = 147.0 matTable.Rows(3)("YMember") = 69.0 Me.PieChart1.DataSource = matTable Me.PieChart1.DataBind() End Sub
C#: private void TestChart2_Load(object sender, EventArgs e) { DataTable matTable = new DataTable(); matTable.Columns.Add("XMember", typeof(string)); matTable.Columns.Add("YMember", typeof(int)); for (int i = 1; i <= 4; i += 1) { DataRow row = matTable.NewRow(); matTable.Rows.Add(row); } matTable.Rows[0]["XMember"] = "餐饮"; matTable.Rows[1]["XMember"] = "住宿"; matTable.Rows[2]["XMember"] = "长途"; matTable.Rows[3]["XMember"] = "通讯"; matTable.Rows[0]["YMember"] = 740.0; matTable.Rows[1]["YMember"] = 280.0; matTable.Rows[2]["YMember"] = 147.0; matTable.Rows[3]["YMember"] = 69.0; this.PieChart1.DataSource = matTable; this.PieChart1.DataBind(); }
d.XAxisLabelMember属性
绑定X轴的值,如图4
e.YAxisLabelMember属性
绑定Y轴的值,如图5
图4 | 图5 |