/// <summary>
/// Renders the control to the specified HTML writer.
/// </summary>
/// <param name="writer">The <see cref="System.Web.UI.HtmlTextWriter" />
/// object that receives the control content. </param>
protected override void Render(HtmlTextWriter writer)
{
if (Width.Type != UnitType.Pixel)
{
throw new ArgumentOutOfRangeException("Width");
}
if (Height.Type != UnitType.Pixel)
{
throw new ArgumentOutOfRangeException("Height");
}
GoogleChartUrlBuilder googleChartUrlBuilder =
new GoogleChartUrlBuilder(new Size((int)Width.Value, (int)Height.Value), ChartType,
GetGoogleChartDataEncoder());
//
// Binding
if (DataSource != null)
{
if (DataSource is IEnumerable)
{
DataBindEnumerable(googleChartUrlBuilder, DataSource as IEnumerable);
}
} // if
writer.AddAttribute(HtmlTextWriterAttribute.Src, googleChartUrlBuilder.BuildUrl());
writer.RenderBeginTag(HtmlTextWriterTag.Img);
writer.RenderEndTag();
}
private static void DataBindEnumerable(GoogleChartUrlBuilder googleChartUrlBuilder, IEnumerable enumerable)
{
googleChartUrlBuilder.AddDataSet(enumerable);
}
