public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
DataGridLengthConverter converter = new DataGridLengthConverter();
var res = converter.ConvertFrom(value);
return(res);
}
public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
DataGridLengthConverter dglc = new DataGridLengthConverter();
double val = (double)value;
return(dglc.ConvertFrom(val));
}
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));
}
private static void AddColumns(DataGrid dataGrid, IEnumerable columns)
{
foreach (var column in columns)
{
var desc = column as IColumnDescriptionVm;
var template = desc?.Template;
var cellTemplate = dataGrid.FindResource(new DataTemplateKey(template.GetType())) as DataTemplate;
var dataGridLengthConverter = new DataGridLengthConverter();
var customBoundColumn = new CustomBoundColumn(desc)
{
Header = column,
CellTemplate = cellTemplate,
CellEditingTemplate = GetAttachedCellEditingTemplate(dataGrid),
// MappedValueCollection = GetMappedValues(dataGrid),
};
if (desc.Width != null)
{
customBoundColumn.Width = (DataGridLength)dataGridLengthConverter.ConvertFrom(null, CultureInfo.InvariantCulture, desc.Width);
}
else
{
customBoundColumn.Width = new DataGridLength(1, DataGridLengthUnitType.Star);
}
if (desc.CanSort)
{
customBoundColumn.HeaderTemplate = GetSortingHeaderTemplate(dataGrid);
}
else
{
customBoundColumn.HeaderTemplate = GetHeaderTemplate(dataGrid);
}
if (desc.HasOverlook)
{
customBoundColumn.CellStyle = dataGrid.FindResource("OverlookCellStyle") as Style;
}
if (desc.InsertBefore)
{
dataGrid.Columns.Insert(dataGrid.FrozenColumnCount, customBoundColumn);
}
else
{
dataGrid.Columns.Add(customBoundColumn);
}
}
}
/// <summary>
/// DataGrid绑定数据源描述
/// </summary>
/// <param name="headerName">列名</param>
/// <param name="showAs">显示为</param>
/// <param name="width">宽度</param>
/// <param name="displayIndex">显示顺序</param>
/// <param name="resourceKey">自定义列Key</param>
public BindDescriptionAttribute(string headerName, ShowScheme showAs = ShowScheme.普通文本, string width = "Auto", int displayIndex = 0, string resourceKey = "")
{
HeaderName = headerName;
DisplayIndex = displayIndex;
ResourceKey = resourceKey;
ShowAs = showAs;
var convert = new DataGridLengthConverter();
Width = (DataGridLength)convert.ConvertFrom(width);
var gridCOnvert = new GridLengthConverter();
CloumnWidth = (GridLength)gridCOnvert.ConvertFrom(width);
if (showAs == ShowScheme.自定义 && string.IsNullOrWhiteSpace(resourceKey))
{
throw new ArgumentException($"自定义列时需要指定{nameof(resourceKey)}参数！");
}
}
protected override Dictionary <string, object> FetchAdditionalLayoutInfo()
{
var additionalLayoutInfo = new Dictionary <string, object>();
var dataGridLengthConverter = new DataGridLengthConverter();
Regex widthSpecialCharacterMatch = new Regex(@"[^0-9.]");
for (int index = 0; index < this.DataGridFields.Columns.Count; index++)
{
DataGridColumn dataGridColumn = this.DataGridFields.Columns[index];
string dataGridColumnWidthStr = dataGridLengthConverter.ConvertToString(dataGridColumn.Width);
if (widthSpecialCharacterMatch.IsMatch(dataGridColumnWidthStr))
{
additionalLayoutInfo.Add(string.Format(DataGridColumnKeyFormat, index), dataGridLengthConverter.ConvertToString(dataGridColumn.Width));
}
else
{
additionalLayoutInfo.Add(string.Format(DataGridColumnKeyFormat, index), Convert.ToString(dataGridColumn.ActualWidth));
}
}
return(additionalLayoutInfo);
}
