FastObjectListView and Groups

[Computer Logix]

ObjectListView Version 2.7.0 (2014/02/26)

For some reason when I drop a FastObjectListView on a form and turn on ShowGroups in the properties and save the form the ShowGroups property keeps switching back to false.

If I switch the control to an ObjectListView it behaves as expected and works fine.

If I open the designer file and add ShowGroups = true; to the FastObjectListView control it works.
As soon as I open the form in Visual Studio 2012 it reverts back to ShowGroups = false;

Any idea why?

[Phillip Piper]

I think it has to do with the default value being true (according to the designer), but actually I set it to false, since that's more commonly what's required.

For the moment, just set the ShowGroups value in code after the InitializeComponent() call.

[Computer Logix]

Thanks. I just wanted to make sure I wasn't doing anything stupid. I will continue to turn on grouping after the InitializeComponent() call for now.

Also every time you release OLV I have to apply a small patch to it because my particular project uses a DecimalCellEditor as well as a NumericalTextBox. (Users complained about the up/down arrows so I use a textbox that only accepts numbers) Would you be interested in my changes so you can evaluate if you want to add them to a future release? Just let me know.

Richard.

[Phillip Piper]

I'm always happy to hear how I could improve OLV. Give me a suggestion or
some code and I'll see about having it included.

Regards,
Phillip

---

Phillip Piper www.bigfoot.com/~phillip_piper phillip_piper@bigfoot.com
A man's life does not consist in the abundance of his possessions

On 4 July 2014 22:04, Computer Logix computerlogix@users.sf.net wrote:

Thanks. I just wanted to make sure I wasn't doing anything stupid. I will
continue to turn on grouping after the InitializeComponent() call for now.

Also every time you release OLV I have to apply a small patch to it
because my particular project uses a DecimalCellEditor as well as a
NumericalTextBox. (Users complained about the up/down arrows so I use a
textbox that only accepts numbers) Would you be interested in my changes so
you can evaluate if you want to add them to a future release? Just let me
know.

Richard.

FastObjectListView and Groups
https://sourceforge.net/p/objectlistview/discussion/812922/thread/13b9d66c/?limit=25#f6fb

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[Computer Logix]

Here are some of my mods I made and are free for anyone to use. Sorry if the formatting is terrible... I can't figure out this SourceForge editor and c#...

The first allows for decimal values.

In EditorRegistry.cs I added this line to InitializeStandardTypes()
this.Register(typeof(Decimal), typeof(DecimalCellEditor));

In CellEditors.cs I added this class as well as changed all the maximum and minimum values to hold 10 digits instead of your default 7. 7 wasn't enough for my needs.

/// <summary>
/// This editor simply shows and edits decimal values
/// </summary>
internal class DecimalCellEditor : NumericUpDown
{
  public DecimalCellEditor()
  {
    DecimalPlaces = 2;
    Minimum = 0;
    Maximum = 9999999999;
  }

  public new decimal Value
  {
    get { return Convert.ToDecimal(base.Value); }
    set { base.Value = Convert.ToDecimal(value); }
  }
}

/// <summary>
/// This editor simply shows and edits floating point values.
/// </summary>
/// <remarks>You can intercept the CellEditStarting event if you want
/// to change the characteristics of the editor. For example, by increasing
/// the number of decimal places.</remarks>
[ToolboxItem(false)]
public class NumberTextCellEditor : NumericTextBox
{
  /// <summary>
  ///
  /// </summary>
  public NumberTextCellEditor()
  {
    this.TextAlign = HorizontalAlignment.Right;
    this.AllowDecimals = false;
    this.AllowCommas = true;
    this.AllowNegatives = false;
  }

  /// <summary>
  /// Gets or sets the value shown by this editor
  /// </summary>
  public new decimal Value
  {
    get { return Convert.ToDecimal(base.Text); }
    set { base.Text = value.ToString(); }
  }
}

I created a new file called NumericTextBox.cs and added it to the CellEditing directory
This allows me to use a textbox for numbers instead of the default up/down control which my users tend to complain a lot about.

using System;
using System.Globalization;
using System.Windows.Forms;

namespace BrightIdeasSoftware
{
public class NumericTextBox : TextBox
{
protected override void OnKeyPress(KeyPressEventArgs e)
{
base.OnKeyPress(e);

  NumberFormatInfo numberFormatInfo = CultureInfo.CurrentCulture.NumberFormat;
  string decimalSeparator = numberFormatInfo.NumberDecimalSeparator;
  string groupSeparator = numberFormatInfo.NumberGroupSeparator;
  string negativeSign = numberFormatInfo.NegativeSign;

  string keyInput = e.KeyChar.ToString();

  if (Char.IsDigit(e.KeyChar))
  {
    // Digits are OK
  }
  else if (AllowDecimals &&
           keyInput.Equals(decimalSeparator) &&
    !this.Text.Contains("."))
  {
    // Decimals are OK as long as there is only one.
  }
  else if (AllowCommas &&
           keyInput.Equals(groupSeparator))
  {
    // Comma separator is OK
  }
  else if (e.KeyChar == '\b')
  {
    // Backspace key is OK
  }
  else if (AllowNegatives &&
           keyInput.Equals("-") &&
           string.IsNullOrEmpty(Text) &&
           Text.IndexOf("-") == -1)
  {
    // Decimal separator is OK in the first position
  } 
  else if (AllowSpace && e.KeyChar == ' ')
  {
    // Space key is OK
  }
  else
  {
    // Swallow this invalid key
    e.Handled = true;
  }
}

#region Properties

public int IntValue
{
  get { return Int32.Parse(Text); }
}

public decimal DecimalValue
{
  get { return Decimal.Parse(Text); }
}

public bool AllowDecimals { get; set; }

public bool AllowCommas { get; set; }

public bool AllowNegatives { get; set; }

public bool AllowSpace { get; set; }

#endregion Properties

}
}

[Obelix]

this issue is still present in version 2.9.1
took me HOURS to find, because I always thought I was doing something wrong...
would be cool if fixed in new update...