protected override void ApplyAdditionalLayoutInfo(Dictionary <string, object> layoutInfo)
{
DataGridLength[] originalColumnWidths = this.DataGridFields.Columns.Select(column => column.Width).ToArray();
try
{
var dataGridLengthConverter = new DataGridLengthConverter();
for (int index = 0; index < this.DataGridFields.Columns.Count; index++)
{
var dataGridColumnKey = string.Format(DataGridColumnKeyFormat, index);
if (!layoutInfo.ContainsKey(dataGridColumnKey))
{
continue;
}
this.DataGridFields.Columns[index].Width = (DataGridLength)dataGridLengthConverter.ConvertFromString((string)layoutInfo[dataGridColumnKey]);
}
}
catch
{
for (int index = 0; index < this.DataGridFields.Columns.Count; index++)
{
this.DataGridFields.Columns[index].Width = originalColumnWidths[index];
}
}
}
private DataGridLength ParseWidth(string defaultWidth)
{
if (string.IsNullOrEmpty(defaultWidth))
{
return(new DataGridLength(100));
}
var converter = new DataGridLengthConverter();
return((DataGridLength)converter.ConvertFromString(defaultWidth));
}
protected override ValidationResult IsValid(object value, ValidationContext validationContext)
{
var stringValue = (value as string);
if (string.IsNullOrEmpty(stringValue))
{
return(ValidationResult.Success);
}
try
{
ConverterInstance.ConvertFromString(stringValue);
return(ValidationResult.Success);
}
catch
{
return(new ValidationResult("Examples of valid values: 'Auto', '150', '2*'", new[] { validationContext.MemberName }));
}
}