Questions on UI for WinForms Forum

1 answer

171 views

hi
I'm working on an application that in one part of this, we have to display physical disk content in grid for user.
we have a cache(reduce disk access and increase performance) that load 10 kilo byte of data and use it in CellValueNeeded event of radGridView1 as below

private void radGridView1_CellValueNeeded(object sender, GridViewCellValueEventArgs e)
{

try
{
e.Value = cache.retriveCellElement(e.RowIndex, e.ColumnIndex);
}
catch
{
MessageBox.Show(e.RowIndex.ToString() + " + " + e.ColumnIndex.ToString());
}

}
but when the rowCount of radGridView1 greater than 1000000 this is very slow and when rowCount greater than 2000000 radGridView1 doesn't show anything. is there any limit on rowCount? is there any alternative solution in this case?
Thank you in advance for your help.

GridView

answered on 23 Dec 2013

3 answers

258 views

[Solved] Button on ribbon disabled color

Hi,

how can I adjust color of disabled button? By default image is changed to grayscale but in my program I need it to be darker.
How can I adjust it in Visual Style Builder?

Cheers,
Kuba.

RibbonBar

answered on 23 Dec 2013

1 answer

340 views

jlkjlj

sdfasdflsakj

General Discussions

answered on 23 Dec 2013

12 answers

599 views

fa-Ir Culture in RadDateTimePicker problem

hello,
I am using Q2 2011 and want to have a Persian DateTimePicker but when I set RadDateTimePicker culture property to fa-Ir, an exception is thrown in this line:

this.radDateTimePicker1.Culture = new System.Globalization.CultureInfo("fa-IR");

Index was out of range. Must be non-negative and less than the size of the collection.

Parameter name: index

I tried everything said in other forum threads like setting thread culture and calendar to persian :

CultureInfo info = new CultureInfo("fa-Ir");

info.DateTimeFormat.Calendar = new PersianCalendar();

Thread.CurrentThread.CurrentCulture = info;

this.radDateTimePicker1.Culture = info;

but I get the same exception at this line:

this.radDateTimePicker1.Culture = info;

Index was out of range. Must be non-negative and less than the size of the collection.

Parameter name: index

Then I tried another code posted in MSDN forums:

System.Globalization.CultureInfo calture = new System.Globalization.CultureInfo("fa-IR");

System.Globalization.DateTimeFormatInfo info = calture.DateTimeFormat;

info.AbbreviatedDayNames = new string[] { "ی", "د", "س", "چ", "پ", "ج", "ش" };

info.DayNames = new string[] { "یکشنبه", "دوشنبه", "ﺳﻪشنبه", "چهارشنبه", "پنجشنبه", "جمعه", "شنبه" };

info.AbbreviatedMonthNames = new string[] { "فروردین", "ارديبهشت", "خرداد", "تير", "مرداد", "شهریور", "مهر", "آبان", "آذر", "دی", "بهمن", "اسفند", "" };

info.MonthNames = new string[] { "فروردین", "ارديبهشت", "خرداد", "تير", "مرداد", "شهریور", "مهر", "آبان", "آذر", "دی", "بهمن", "اسفند", "" };

info.AMDesignator = "ق.ظ";

info.PMDesignator = "ب.ظ";

info.ShortDatePattern = "yyyy/MM/dd";

info.FirstDayOfWeek = DayOfWeek.Saturday;

System.Globalization.PersianCalendar cal = new System.Globalization.PersianCalendar();

typeof(System.Globalization.DateTimeFormatInfo).GetField("calendar"

, System.Reflection.BindingFlags.Public | System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.NonPublic).SetValue(info, cal);

object obj = typeof(System.Globalization.DateTimeFormatInfo).GetField("m_cultureTableRecord"

, System.Reflection.BindingFlags.Public | System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.NonPublic).GetValue(info);

obj.GetType().GetMethod("UseCurrentCalendar", System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Instance).Invoke(obj, new object[] { cal.GetType().GetProperty("ID", System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.NonPublic).GetValue(cal, null) });

typeof(System.Globalization.CultureInfo).GetField("calendar"

, System.Reflection.BindingFlags.Public | System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.NonPublic).SetValue(calture, cal);

typeof(System.Globalization.CultureInfo).GetField("calendar"

, System.Reflection.BindingFlags.Public | System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.NonPublic).SetValue(calture, cal);

System.Threading.Thread.CurrentThread.CurrentCulture = calture;

System.Threading.Thread.CurrentThread.CurrentUICulture = calture;

System.Globalization.CultureInfo.CurrentCulture.DateTimeFormat = info;

System.Globalization.CultureInfo.CurrentUICulture.DateTimeFormat = info;

the same exception is thrown again in this line:

this.radDateTimePicker1 = new Telerik.WinControls.UI.RadDateTimePicker();

System.ArgumentOutOfRangeException was unhandled

Message=Index was out of range. Must be non-negative and less than the size of the collection.

Parameter name: index

Source=mscorlib

ParamName=index

StackTrace:

at System.ThrowHelper.ThrowArgumentOutOfRangeException(ExceptionArgument argument, ExceptionResource resource)

at System.ThrowHelper.ThrowArgumentOutOfRangeException()

at System.Collections.Generic.List`1.get_Item(Int32 index)

at Telerik.WinControls.UI.MaskDateTimeProvider.SelectFirstItem()

at Telerik.WinControls.UI.MaskDateTimeProvider.SelectFirstEditableItem()

at Telerik.WinControls.UI.MaskDateTimeProvider..ctor(String mask, CultureInfo culture, RadMaskedEditBoxElement owner)

at Telerik.WinControls.UI.RadMaskedEditBoxElement.CreateMaskProvider()

at Telerik.WinControls.UI.RadMaskedEditBoxElement.set_Mask(String value)

at Telerik.WinControls.UI.RadDateTimePickerCalendar.SetDateByValue(Nullable`1 date, DateTimePickerFormat formatType)

at Telerik.WinControls.UI.RadDateTimePickerCalendar.CreateChildren()

at Telerik.WinControls.UI.RadDateTimePickerElement.SetBehavior(RadDateTimePickerBehaviorDirector childrenDirector)

at Telerik.WinControls.UI.RadDateTimePickerElement.CreateChildElements()

at Telerik.WinControls.RadElement.CallCreateChildElements()

at Telerik.WinControls.RadElement.Construct()

at Telerik.WinControls.RadElement..ctor()

at Telerik.WinControls.RadItem..ctor()

at Telerik.WinControls.UI.RadDateTimePickerElement..ctor()

at Telerik.WinControls.UI.RadDateTimePicker.CreateChildItems(RadElement parent)

at Telerik.WinControls.RadControl.Telerik.WinControls.IComponentTreeHandler.CreateChildItems(RadElement parent)

at Telerik.WinControls.RadControl.ComponentOverrideElementTree.CreateChildItems(RadElement parent)

at Telerik.WinControls.RadControl.Construct()

at Telerik.WinControls.RadControl..ctor()

at Telerik.WinControls.UI.RadDateTimePicker..ctor()

at test.Form1.InitializeComponent() in C:\Users\Arash\Desktop\New folder\test\test\Form1.Designer.cs:line 32

at test.Form1..ctor() in C:\Users\Arash\Desktop\New folder\test\test\Form1.cs:line 43

at test.Program.Main() in C:\Users\Arash\Desktop\New folder\test\test\Program.cs:line 18

at System.AppDomain._nExecuteAssembly(Assembly assembly, String[] args)

at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)

at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()

at System.Threading.ThreadHelper.ThreadStart_Context(Object state)

at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)

at System.Threading.ThreadHelper.ThreadStart()

InnerException:

I couldn't find anyhting on the net and I'm stuck with a Persian Date picker!

please help me

Calendar, DateTimePicker, TimePicker and Clock

answered on 23 Dec 2013

2 answers

183 views

[Solved] Disable Make New Folder button in RadBrowseEditor

How do I disable "Make New Folder" button in RadBrowseEditor dialog? Also, I want to re-size the dialog on user preference, How do I achieve this?

BrowseEditor

answered on 23 Dec 2013

3 answers

166 views

How to add a column to display related data

I'm sure there's already an answer to my question in the forum, but I haven't been able to locate one:

In a WinForms project I'm using an entity framework entity that represents a table of invoice data: Project_ID, Principal, Interest, etc. Since I'm using an entity representation of a table, it doesn't include, in this case, the ProjectName located in the projects table. I want my grid to be based on the entity to use the framework's functionality to update the table, but I want a column next to the Project_ID that displays the related ProjectName. How can I accomplish this?

Thank you in advance for your help.

Patrick

GridView

answered on 23 Dec 2013

3 answers

376 views

[Solved] Bind custom object on listview

Hi,
I am looking to bind a listview with a generic list of a custom object. I got some problems trying to get the same results as in your examples. First of all when I put it on listview viewmode it show only the display member value when I was expecting it to show all column in the listview. may be I need to set something to get it work? I noticed that I can show what I want using the visualitem.text to show it the way I want but I can't find a way to do it automatically. Also I did copy your code to make the grouping work and it dosen't... I doe's make grouping when I put wrong property name in it then, the grouping seem's to be based on the count of item's. Well I would like to find a way to acheive it. May be a little project binding a custom object with grouping and differents viewmodes could help me to achieve my goal (since all your example are made with datatable).

Thanks

ListView

answered on 23 Dec 2013

3 answers

140 views

RadGridView follow New Row

Hi

I am using the WinForms RadGridView control in a project. I have achieved full CRUD with all the desired behaviours with one exception, that is when the user adds a row via the 'Click here to add a new row' line at the top of the grid the row is added fine, however the new row is not the currently selected row. On a larger data grid this often is off screen.

I can achieve it with a bit of a mash, but I'm sure that is not correct!

How do I make the newly added row the currently selected row?

Regards

Chris

GridView

answered on 23 Dec 2013

3 answers

207 views

[Solved] Display dropdown arrow when a GridViewMultiComboBoxColumn cell is first activated

Say you have a GridView whose first column is a GridViewMultiComboBoxColumn.

When the grid is first activated, the cell belonging to this column in the first row becomes the active cell, but the dropdown arrow button does not display. You need to click on the cell before the dropdown button is shown.

Is there some trick to get the arrow button to display as soon as this cell (or any other cell belonging to the GridViewMultiComboBoxColumn column) is first activated?

Thanks.

GridView

answered on 21 Dec 2013

1 answer

151 views

Initial value for GridViewMultiComboboxColumn

Hello people,

I have a Gridview with a column multicombobox can load it correctly, but I want to start the program that she got given initial value.

How do I have an initial default value for this combobox in the grid?

Thank you.

GridView

answered on 21 Dec 2013