/// <summary>
/// Creates a binding for the given settings.
/// </summary>
/// <param name="dataSource"></param>
/// <param name="control"></param>
/// <param name="propertyName"></param>
/// <param name="expression"></param>
/// <returns></returns>
public Binding CreateBinding(Control control, string propertyName, string expression)
{
if (propertyName == null)
{
throw new ArgumentNullException("propertyName");
}
if (propertyName.Length == 0)
{
throw new ArgumentException("'propertyName' is zero-length.");
}
if (expression == null)
{
throw new ArgumentNullException("expression");
}
if (expression.Length == 0)
{
throw new ArgumentException("'expression' is zero-length.");
}
if (DataSource == null)
{
throw new ArgumentNullException("DataSource");
}
// get...
EntityType entityType = this.EntityType;
if (entityType != null)
{
// work out what the expression is...
EntityViewProperty property = EntityViewProperty.GetViewProperty(entityType, expression);
if (property is EntityFieldViewProperty)
{
return(new EntityFieldBinding(((EntityFieldViewProperty)property).Field, this.DataSource, propertyName));
}
if (property is EntityLinkViewProperty)
{
return(new EntityLinkBinding(((EntityLinkViewProperty)property).Link, this.DataSource, propertyName));
}
if (property is EntityBindViewProperty)
{
return(new EntityPropertyBinding(((EntityBindViewProperty)property).Property, this.DataSource, propertyName));
}
else
{
throw new NotSupportedException(string.Format(Cultures.Exceptions, "Cannot handle '{0}'.", property));
}
}
// return a default binding...
return(this.CreateDefaultBinding(propertyName, expression));
}
public static string GetPropertyString(bool?isMany, EntityViewProperty p, bool?prevIsMany, bool isFirstOrDefault)
{
if (isFirstOrDefault)
{
return(p.EntityProperty != null
? p.EntityProperty.PropertyName
: p.EntityViewViewProperty.EntityProperty.PropertyName);
}
if (prevIsMany == null)
{
return(p.EntityProperty != null
? p.EntityProperty.PropertyName
: p.EntityViewViewProperty.EntityProperty.PropertyName);
}
if (isMany == null)
{
return(p.EntityProperty != null
? p.EntityProperty.PropertyName
: p.EntityViewViewProperty.EntityProperty.PropertyName);
}
if (prevIsMany == true)
{
return(string.Format("Select(z => z.{0})",
p.EntityProperty != null
? p.EntityProperty.PropertyName
: p.EntityViewViewProperty.EntityProperty.PropertyName));
}
else
{
if (isMany == true)
{
return(string.Format("Select(z => z.{0})",
p.EntityProperty != null
? p.EntityProperty.PropertyName
: p.EntityViewViewProperty.EntityProperty.PropertyName));
}
else
{
return(p.EntityProperty.PropertyName);
}
}
}
