/// <summary>
/// Sets the data source.
/// </summary>
/// <param name="names">The names.</param>
/// <param name="values">The values.</param>
/// <exception cref="System.ArgumentNullException">
/// names
/// or
/// values
/// </exception>
/// <exception cref="System.Exception">两个数组的长度不一致！</exception>
public void SetDataSource(string[] names, int[] values)
{
if (names == null)
{
throw new ArgumentNullException("names");
}
if (values == null)
{
throw new ArgumentNullException("values");
}
if (names.Length != values.Length)
{
throw new Exception("两个数组的长度不一致！");
}
pieItems = new PieItem[names.Length];
for (int i = 0; i < names.Length; i++)
{
pieItems[i] = new PieItem
{
Name = names[i],
Value = values[i]
};
}
Invalidate();
}
/// <summary>
/// Initializes a new instance of the <see cref="UCPieChart"/> class.
/// </summary>
public UCPieChart()
{
InitializeComponent();
random = new Random();
formatCenter = new StringFormat();
formatCenter.Alignment = StringAlignment.Center;
formatCenter.LineAlignment = StringAlignment.Center;
SetStyle(ControlStyles.UserPaint | ControlStyles.SupportsTransparentBackColor, true);
SetStyle(ControlStyles.ResizeRedraw, true);
SetStyle(ControlStyles.OptimizedDoubleBuffer, true);
SetStyle(ControlStyles.AllPaintingInWmPaint, true);
pieItems = new PieItem[0];
if (GetService(typeof(IDesignerHost)) != null || LicenseManager.UsageMode == LicenseUsageMode.Designtime)
{
pieItems = new PieItem[5];
for (int i = 0; i < 5; i++)
{
pieItems[i] = new PieItem
{
Name = "Source" + (i + 1),
Value = random.Next(10, 100)
};
}
}
}
