Silverlight 保存颜色值

我们知道WPF里的System.Windows.Media.Color里有BrushConverter类可以用来转换保存在字符串的颜色值：

B<a href="/tag/rush/" target="_blank" class="keywords">rush</a>Converter converter = new B<a href="/tag/rush/" target="_blank" class="keywords">rush</a>Converter(); B<a href="/tag/rush/" target="_blank" class="keywords">rush</a> b<a href="/tag/rush/" target="_blank" class="keywords">rush</a> = converter.ConvertFromString(pColor.Name) as B<a href="/tag/rush/" target="_blank" class="keywords">rush</a>;

但在目前的Silverlight版本中却没有这个类，只能自己创建一个类来转换。

在项目中创建类如下：

public class ColorConverter : IValueConverter { #region IValueConverter Members //[ValueConversion(typeof(SolidColorB<a href="/tag/rush/" target="_blank" class="keywords">rush</a>),typeof(string))] public object Convert(object value,Type <a href="/tag/targettype/" target="_blank" class="keywords">targettype</a>,object p<a href="/tag/ara/" target="_blank" class="keywords">ara</a>meter,Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Globalization.CultureInfo culture) { string val = value.ToString(); val = val.Replace("#",""); byte a = Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Convert.ToByte("ff",16); byte pos = 0; if (val.Length == 8) { a = Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Convert.ToByte(val.Substring(pos,2),16); pos = 2; } byte r = Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Convert.ToByte(val.Substring(pos,16); pos += 2; byte g = Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Convert.ToByte(val.Substring(pos,16); pos += 2; byte b = Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Convert.ToByte(val.Substring(pos,16); Color col = Color.FromArgb(a,r,g,b); return new SolidColorB<a href="/tag/rush/" target="_blank" class="keywords">rush</a>(col); } public object ConvertBack(object value,Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Globalization.CultureInfo culture) { SolidColorB<a href="/tag/rush/" target="_blank" class="keywords">rush</a> val = value as SolidColorB<a href="/tag/rush/" target="_blank" class="keywords">rush</a>; return "#" + val.Color.A.ToString() + val.Color.R.ToString() + val.Color.G.ToString() + val.Color.B.ToString(); } #endregion }

 

现在我们要做的事情：

1.从调色板获取颜色值：

请参考我的另一篇博客： http://blog.csdn.net/soft2buy/archive/2010/10/12/5936857.aspx

2.保存颜色值：（把颜色值转成字符串）

用以上的ColorPicker控件可以直接使用 toString() 把颜色保存成Hexadecimal Color. ("#000000" 格式)

3.获取颜色至并修改TextBox的背景色：

ColorConverter cc = new ColorConverter(); this.text<a href="/tag/Box/" target="_blank" class="keywords">Box</a>1.Background = (SolidColorB<a href="/tag/rush/" target="_blank" class="keywords">rush</a>)cc.Convert(this.strcolor,null,null);

 

 如果把颜色值保存成"Red","Blue"...等字符串时，可以使用以下方法获取颜色值：

要添加对 using System.Reflection; 的引用

 

  Type colorType = (typeof(Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Windows.Media.Colors)); if (null!=BindingFlags.GetProperty) { object o = colorType.InvokeMember(this.strcolor,BindingFlags.GetProperty,null); if (o != null) { this.text<a href="/tag/Box/" target="_blank" class="keywords">Box</a>1.Background = new SolidColorB<a href="/tag/rush/" target="_blank" class="keywords">rush</a>((Color)o); } }