public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, System.Type destinationType)
{
if (destinationType == null)
{
throw new ArgumentNullException("destinationType");
}
if (!(value is TableLayoutSettings) || !(destinationType == typeof(string)))
{
return(base.ConvertTo(context, culture, value, destinationType));
}
TableLayoutSettings settings = value as TableLayoutSettings;
StringBuilder output = new StringBuilder();
XmlWriter writer = XmlWriter.Create(output);
writer.WriteStartElement("TableLayoutSettings");
writer.WriteStartElement("Controls");
foreach (TableLayoutSettings.ControlInformation information in settings.GetControlsInformation())
{
writer.WriteStartElement("Control");
writer.WriteAttributeString("Name", information.Name.ToString());
writer.WriteAttributeString("Row", information.Row.ToString(CultureInfo.CurrentCulture));
writer.WriteAttributeString("RowSpan", information.RowSpan.ToString(CultureInfo.CurrentCulture));
writer.WriteAttributeString("Column", information.Column.ToString(CultureInfo.CurrentCulture));
writer.WriteAttributeString("ColumnSpan", information.ColumnSpan.ToString(CultureInfo.CurrentCulture));
writer.WriteEndElement();
}
writer.WriteEndElement();
writer.WriteStartElement("Columns");
StringBuilder builder2 = new StringBuilder();
foreach (ColumnStyle style in (IEnumerable)settings.ColumnStyles)
{
builder2.AppendFormat("{0},{1},", style.SizeType, style.Width);
}
if (builder2.Length > 0)
{
builder2.Remove(builder2.Length - 1, 1);
}
writer.WriteAttributeString("Styles", builder2.ToString());
writer.WriteEndElement();
writer.WriteStartElement("Rows");
StringBuilder builder3 = new StringBuilder();
foreach (RowStyle style2 in (IEnumerable)settings.RowStyles)
{
builder3.AppendFormat("{0},{1},", style2.SizeType, style2.Height);
}
if (builder3.Length > 0)
{
builder3.Remove(builder3.Length - 1, 1);
}
writer.WriteAttributeString("Styles", builder3.ToString());
writer.WriteEndElement();
writer.WriteEndElement();
writer.Close();
return(output.ToString());
}
public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType)
{
if (value is TableLayoutSettings && (destinationType == typeof(string)))
{
TableLayoutSettings tableLayoutSettings = value as TableLayoutSettings;
StringBuilder xmlStringBuilder = new StringBuilder();
XmlWriter xmlWriter = XmlWriter.Create(xmlStringBuilder);
xmlWriter.WriteStartElement("TableLayoutSettings");
//
// write controls
//
xmlWriter.WriteStartElement("Controls");
foreach (TableLayoutSettings.ControlInformation c in tableLayoutSettings.GetControlsInformation())
{
if (c.Name is null)
{
throw new InvalidOperationException(SR.TableLayoutSettingsConverterNoName);
}
xmlWriter.WriteStartElement("Control");
xmlWriter.WriteAttributeString("Name", c.Name.ToString());
xmlWriter.WriteAttributeString("Row", c.Row.ToString(CultureInfo.CurrentCulture));
xmlWriter.WriteAttributeString("RowSpan", c.RowSpan.ToString(CultureInfo.CurrentCulture));
xmlWriter.WriteAttributeString("Column", c.Column.ToString(CultureInfo.CurrentCulture));
xmlWriter.WriteAttributeString("ColumnSpan", c.ColumnSpan.ToString(CultureInfo.CurrentCulture));
xmlWriter.WriteEndElement();
}
xmlWriter.WriteEndElement(); // end Controls
//
// write columns
//
xmlWriter.WriteStartElement("Columns");
StringBuilder columnStyles = new StringBuilder();
foreach (ColumnStyle colStyle in tableLayoutSettings.ColumnStyles)
{
columnStyles.AppendFormat("{0},{1},", colStyle.SizeType, colStyle.Width);
}
if (columnStyles.Length > 0)
{
columnStyles.Remove(columnStyles.Length - 1, 1);
}
xmlWriter.WriteAttributeString("Styles", columnStyles.ToString());
xmlWriter.WriteEndElement(); // end columns
//
// write rows
//
xmlWriter.WriteStartElement("Rows");
StringBuilder rowStyles = new StringBuilder();
foreach (RowStyle rowStyle in tableLayoutSettings.RowStyles)
{
rowStyles.AppendFormat("{0},{1},", rowStyle.SizeType, rowStyle.Height);
}
if (rowStyles.Length > 0)
{
rowStyles.Remove(rowStyles.Length - 1, 1);
}
xmlWriter.WriteAttributeString("Styles", rowStyles.ToString());
xmlWriter.WriteEndElement(); // end Rows
xmlWriter.WriteEndElement(); // end TableLayoutSettings
xmlWriter.Close();
return(xmlStringBuilder.ToString());
}
return(base.ConvertTo(context, culture, value, destinationType));
}
public void TableLayoutSettings_RoundTripAndExchangeWithNet()
{
string netBlob;
using (var tableLayoutPanel = new TableLayoutPanel
{
Name = "table",
CellBorderStyle = TableLayoutPanelCellBorderStyle.OutsetDouble,
ColumnCount = 3,
RowCount = 2
})
{
tableLayoutPanel.ColumnStyles.Add(new ColumnStyle(SizeType.Percent, 50));
tableLayoutPanel.ColumnStyles.Add(new ColumnStyle(SizeType.Percent, 50));
tableLayoutPanel.ColumnStyles.Add(new ColumnStyle(SizeType.Percent, 50));
tableLayoutPanel.RowStyles.Add(new RowStyle(SizeType.Absolute, 20));
tableLayoutPanel.RowStyles.Add(new RowStyle(SizeType.Absolute, 30));
var button00_10 = new Button()
{
Name = "button00_10"
};
tableLayoutPanel.Controls.Add(button00_10, 0, 0);
tableLayoutPanel.SetColumnSpan(button00_10, 2);
var label20_21 = new Label()
{
Name = "label20_21"
};
tableLayoutPanel.Controls.Add(label20_21, 2, 0);
tableLayoutPanel.SetRowSpan(label20_21, 2);
tableLayoutPanel.Controls.Add(new RadioButton()
{
Name = "radioButton01"
}, 0, 1);
tableLayoutPanel.Controls.Add(new CheckBox()
{
Name = "checkBox11"
}, 1, 1);
netBlob = BinarySerialization.ToBase64String(tableLayoutPanel.LayoutSettings as TableLayoutSettings);
}
// ensure we can deserialise NET serialised data and continue to match the payload
ValidateResult(netBlob);
// ensure we can deserialise NET Fx serialised data and continue to match the payload
ValidateResult(ClassicTableLayoutSettings);
void ValidateResult(string blob)
{
TableLayoutSettings result = BinarySerialization.EnsureDeserialize <TableLayoutSettings>(blob);
Assert.NotNull(result);
Assert.True(result.IsStub); // This class is not associated with an owner control.
Assert.Equal(TableLayoutPanelCellBorderStyle.None, result.CellBorderStyle); // This property is not serialized.
Assert.NotNull(result.LayoutEngine);
// These values will be accessible when the owner is set.
Assert.Throws <NullReferenceException>(() => result.CellBorderWidth);
Assert.Throws <NullReferenceException>(() => result.ColumnCount);
Assert.Throws <NullReferenceException>(() => result.GrowStyle);
Assert.Throws <NullReferenceException>(() => result.RowCount);
Assert.Equal(3, result.ColumnStyles.Count);
Assert.Equal(2, result.RowStyles.Count);
Assert.Equal(SizeType.Percent, result.ColumnStyles[0].SizeType);
Assert.Equal(SizeType.Percent, result.ColumnStyles[1].SizeType);
Assert.Equal(SizeType.Percent, result.ColumnStyles[2].SizeType);
Assert.Equal(SizeType.Absolute, result.RowStyles[0].SizeType);
Assert.Equal(20, result.RowStyles[0].Height);
Assert.Equal(30, result.RowStyles[1].Height);
List <ControlInformation> controls = result.GetControlsInformation();
ValidateControlInformation("button00_10", 0, 0, 2, 1, controls[0]);
ValidateControlInformation("label20_21", 2, 0, 1, 2, controls[1]);
ValidateControlInformation("radioButton01", 0, 1, 1, 1, controls[2]);
ValidateControlInformation("checkBox11", 1, 1, 1, 1, controls[3]);
void ValidateControlInformation(string name, int column, int row, int columnSpan, int rowSpan, ControlInformation control)
{
Assert.Equal(name, control.Name);
Assert.Equal(column, control.Column);
Assert.Equal(row, control.Row);
Assert.Equal(columnSpan, control.ColumnSpan);
Assert.Equal(rowSpan, control.RowSpan);
}
}
}