/// <summary>
/// 销毁对象
/// </summary>
public void Dispose()
{
if (myImage != null)
{
myImage.Dispose();
myImage = null;
}
}
/// <summary>
/// 复制对象
/// </summary>
/// <returns>复制后的对象</returns>
object System.ICloneable.Clone()
{
XImageValue obj = new XImageValue();
if (myValue != null)
{
obj.myValue = (System.Drawing.Image)myValue.Clone();
}
if (bsImage != null)
{
obj.bsImage = new byte[bsImage.Length];
Array.Copy(bsImage, 0, obj.bsImage, 0, bsImage.Length);
}
obj._ContentVersion = this._ContentVersion;
return(obj);
}
/// <summary>
/// 将图片转换为指定类型的数据
/// </summary>
/// <param name="context">上下文</param>
/// <param name="culture">区域信息</param>
/// <param name="Value">图片数据</param>
/// <param name="destinationType">指定的类型</param>
/// <returns>转换结果</returns>
public override object ConvertTo(
ITypeDescriptorContext context,
System.Globalization.CultureInfo culture,
object Value,
Type destinationType)
{
if (destinationType == null)
{
throw new ArgumentNullException("destinationType");
}
XImageValue img = ( XImageValue )Value;
if (img == null)
{
return("[NULL]");
}
if (destinationType == typeof(string))
{
return(img.ToString());
}
if (destinationType == typeof(byte[]))
{
return(img.ImageData);
}
if (destinationType == typeof(InstanceDescriptor))
{
byte[] bs = img.ImageData;
if (bs == null || bs.Length == 0)
{
return(new InstanceDescriptor(typeof(XImageValue).GetConstructor(
new Type[] {}),
new object[] {}));
}
else
{
System.Reflection.MemberInfo constructor = typeof(XImageValue).GetConstructor(new Type[] { typeof(byte[]) });
return(new InstanceDescriptor(constructor, new object[] { img.ImageData }));
}
}
return(base.ConvertTo(context, culture, Value, destinationType));
}