/// <summary>
/// 根据名称和值进行数据源的显示，两者的长度需要一致
/// </summary>
/// <param name="names">名称</param>
/// <param name="values">值</param>
/// <exception cref="ArgumentNullException"></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 HslPieItem[names.Length];
for (int i = 0; i < names.Length; i++)
{
pieItems[i] = new HslPieItem( )
{
Name = names[i],
Value = values[i],
Back = GetRandomColor( ),
};
}
Invalidate( );
}
/// <summary>
/// 实例化一个饼图的控件
/// </summary>
public UserPieChart( )
{
InitializeComponent( );
random = new Random( );
DoubleBuffered = true;
formatCenter = new StringFormat( );
formatCenter.Alignment = StringAlignment.Center;
formatCenter.LineAlignment = StringAlignment.Center;
pieItems = new HslPieItem[0];
}
