/// <summary>
/// 从 DataContext 绑定数据
/// </summary>
/// <param name="element">绑定数据的对象</param>
/// <param name="bindPath">绑定路径</param>
/// <param name="sourcePath">数据源路径</param>
/// <param name="format">格式化字符串</param>
/// <param name="defaultValue">如果找不到数据，所要使用的默认值</param>
/// <returns></returns>
public static IHtmlElement DataBind(this IHtmlElement element, string bindPath, string sourcePath, string format, object defaultValue)
{
if (sourcePath == null)
{
throw new ArgumentNullException("sourcePath");
}
if (format == null)
{
format = "{0}";
}
var context = BindingContext.Current;
var value = Eval(element.Data(), sourcePath);
if (value == null)
{
value = defaultValue;
}
var str = string.Format(format, value);
BindCore(element, bindPath, str, BindingNullBehavior.Ignore);
return(element);
}
/// <summary>
/// 设置元素上下文
/// </summary>
/// <param name="element"></param>
public void SetContext(IHtmlElement element)
{
foreach (var item in Datas)
{
element.Data(item.Key, item.Value);
}
}
