Questions on UI for WinForms Forum

2 answers

454 views

richTextEditorRibbonBar Hide Group

I need to hide the "Editing & Proofing" and "Styles" group, achieved hide tab.

Sorry for my bad English

RichTextEditor

answered on 18 Jan 2016

1 answer

1.1K+ views

[Solved] Filling GridView with Multiple Threads

I'm going to fill my RadGridView by using multiple threads. My code is as follows but is not working. How can I do this?

BackgroundWorker[] workers = new BackgroundWorker[2];

private void frmTest_Load(object sender, EventArgs e)

{

for (int col = 0; col < 300; col++)

grid.Columns.Add("Col " + col.ToString());

for (int r = 0; r < 2; r++)

{

workers[r] = new BackgroundWorker();

workers[r].DoWork += new DoWorkEventHandler(Worker_DoWork);

workers[r].RunWorkerCompleted += new RunWorkerCompletedEventHandler(Worker_RunWorkerCompleted);

workers[r].RunWorkerAsync(grid.MasterView);

}

void Worker_DoWork(object sender, DoWorkEventArgs e)

{

var rnd = new Random();

var info = (GridViewInfo)e.Argument;

var row = new GridViewDataRowInfo(info);

int i = 0;

foreach (GridViewCellInfo cell in row.Cells)

{

cell.Value = i++;

cell.Style.NumberOfColors = 1;

cell.Style.BackColor = Color.FromArgb(rnd.Next(0, 255), rnd.Next(0, 255), rnd.Next(0, 255));

cell.Style.CustomizeFill = true;

}

e.Result = row;

}

void Worker_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)

{

grid.Rows.Add((GridViewDataRowInfo)e.Result);

}

GridView

answered on 18 Jan 2016

3 answers

206 views

[Solved] Replicate SelectedIndices for ListView

I am attempting to move multiple selected items between Telerik ListView controls. If I was doing this with a Winforms Listbox, it would look like this:

private void button1_Click(object sender, EventArgs e)

{

for(int x = listBox1.SelectedIndices.Count - 1; x>= 0; x--)

{

int idx = listBox1.SelectedIndices[x];

listBox2.Items.Add(listBox1.Items[idx]);

listBox1.Items.RemoveAt(idx);

}

However, SelectedIndices does not seem to be available. I've tried to use SelectedItems, but my attempts either yield exceptions (because the index was changed at the first delete) or incorrectly listed items in the target list (again because of previous item removals). How does one do this with two Telerik ListView controls? Thanks.

ListView

answered on 18 Jan 2016

10 answers

734 views

[Solved] Mouse Right Click

Is it possible to select an item in a ListView using the mouse right button?

Thanks,

Javier Gonzalez de Aragon

ListView

answered on 18 Jan 2016

1 answer

240 views

Set current cell after ResetBindings

I want to set the current cell after performing a ResetBindings to allow seemless keyboard entry. In my example code below I would like to be able to edit the Name column after tabbing out of the Age column. The row appears highlighted but I must navigate to a different row before I can continue editing

public class MyData : IComparable

{

public int Age { get; set; }

public string Name { get; set; }

public MyData ()

{

}

public MyData (string name, int age)

{

Name = name;

Age = age;

}

public int CompareTo (object obj)

{

var other = obj as MyData;

if (other == null)

return 0;

if (this.Age > other.Age)

return 1;

if (this.Age < other.Age)

return -1;

return 0;

}

private List<MyData> m_dataSource;

private BindingSource myDataBindingSource = new BindingSource();

public Form1()

{

InitializeComponent();

this.radGridView1.MasterTemplate.DataSource = myDataBindingSource;

m_dataSource = PopulateData ();

this.myDataBindingSource.DataSource = m_dataSource;

radGridView1.CellEndEdit += radGridView1_CellEndEdit;

}

void radGridView1_CellEndEdit(object sender, Telerik.WinControls.UI.GridViewCellEventArgs e)

{

var data = this.radGridView1.CurrentRow.DataBoundItem as MyData;

m_dataSource.Sort();

myDataBindingSource.ResetBindings(false);

if (data != null)

{

foreach (var row in this.radGridView1.Rows)

{

if (row.DataBoundItem == data)

{

row.IsCurrent = true;

}

else

{

row.IsCurrent = false;

}

private List<MyData> PopulateData ()

{

List<MyData> dataList = new List<MyData> ();

dataList.Add (new MyData ("A", 1));

dataList.Add (new MyData ("B", 7));

dataList.Add (new MyData ("C", 3));

dataList.Add (new MyData ("D", 5));

dataList.Add (new MyData ("E", 15));

return dataList;

}

GridView

answered on 18 Jan 2016

3 answers

123 views

[Solved] Save Colors in Layout

I save RadGridView layout in SQL using the following code:

string name = Microsoft.VisualBasic.Interaction.InputBox("Please insert the layout name:", " ");

using (MemoryStream ms = new MemoryStream())

{

var lay = new Rahat.Layout();

lay.User_Id = 123;

lay.Title = name;

#region lay.Layout

grid.SaveLayout(ms);

var sw = new StreamWriter(ms);

sw.Flush();

ms.Position = 0;

var sr = new StreamReader(ms);

var myStr = sr.ReadToEnd();

lay.Layout = myStr;

#endregion

_dbRahat.Layouts.InsertOnSubmit(lay);

_dbRahat.SubmitChanges();

}

and load the layout using the following code:

var lay = _dbRahat.Layouts.First(l => l.Id.ToString() == cmbPreset.SelectedValue.ToString());

byte[] byteArray = Encoding.UTF8.GetBytes(lay.Layout);

var stream = new MemoryStream(byteArray);

grid.LoadLayout(stream);

FillGrid();

The problem is that the grid colors (header cell colors, data cell colors) are not saved and loaded with SaveLayout() and LoadLayout() methods. How can I solve this problem?

Thank you

GridView

answered on 18 Jan 2016

5 answers

500 views

TargetInvocationException

I am currently running Telerik WinControls 2009 Q2, I have a ribbon on an MDI form inheriting from the ShapeForm form class.

I would click run, it comes up without a hitch, sometimes it will be fine, most times however if I move the mouse, hover over a button, do nothing, it will throw a TargetInvocationException. This exception is pasted below. This application worked flawlessly till I added the RibbonControl to update the GUI.

Any suggestions on fixing this issue would be greatly appreciated. I am at a loss as to what might be going on but the common denominator seems to be the ribbon The inner exception is a null reference exception in Telerik.WinControls but I am at a loss what this might be.

Exception:

System.Reflection.TargetInvocationException was unhandled

Message="Exception has been thrown by the target of an invocation."

Source="mscorlib"

StackTrace:

at System.RuntimeMethodHandle._InvokeMethodFast(Object target, Object[] arguments, SignatureStruct& sig, MethodAttributes methodAttributes, RuntimeTypeHandle typeOwner)

at System.RuntimeMethodHandle.InvokeMethodFast(Object target, Object[] arguments, Signature sig, MethodAttributes methodAttributes, RuntimeTypeHandle typeOwner)

at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture, Boolean skipVisibilityChecks)

at System.Delegate.DynamicInvokeImpl(Object[] args)

at System.Windows.Forms.Control.InvokeMarshaledCallbackDo(ThreadMethodEntry tme)

at System.Windows.Forms.Control.InvokeMarshaledCallbackHelper(Object obj)

at System.Threading.ExecutionContext.runTryCode(Object userData)

at System.Runtime.CompilerServices.RuntimeHelpers.ExecuteCodeWithGuaranteedCleanup(TryCode code, CleanupCode backoutCode, Object userData)

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

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

at System.Windows.Forms.Control.InvokeMarshaledCallback(ThreadMethodEntry tme)

at System.Windows.Forms.Control.InvokeMarshaledCallbacks()

at System.Windows.Forms.Control.WndProc(Message& m)

at System.Windows.Forms.ScrollableControl.WndProc(Message& m)

at Telerik.WinControls.RadControl.WndProc(Message& m)

at Telerik.WinControls.UI.RadRibbonBar.WndProc(Message& m)

at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)

at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)

at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)

at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(Int32 dwComponentID, Int32 reason, Int32 pvLoopData)

at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)

at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)

at System.Windows.Forms.Application.Run(ApplicationContext context)

at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.OnRun()

at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.DoApplicationModel()

at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.Run(String[] commandLine)

at SoftwareConfigurator.My.MyApplication.Main(String[] Args) in 17d14f5c-a337-4978-8281-53493378c1071.vb:line 81

InnerException: System.NullReferenceException

Message="Object reference not set to an instance of an object."

Source="Telerik.WinControls"

StackTrace:

at Telerik.WinControls.Layouts.ContextLayoutManager.LayoutQueue.GetTopMost()

at Telerik.WinControls.Layouts.ContextLayoutManager.UpdateLayout()

at Telerik.WinControls.Layouts.ContextLayoutManager.UpdateLayoutCallback(ILayoutManager manager)

InnerException:

RibbonBar

answered on 15 Jan 2016

3 answers

109 views

SuggestAppend behavior unexpected

I upgraded from 2014 controls to 2015 and the suggestappend mode of the multi-column combo box (both in grid and as stand along control) no longer works as expected or as it used to. When I begin typing in the field, it correctly performs the append part and attempts to complete the entry based on the items in the list. It also correctly pops the drop list.

However, when I hit 'tab' without typing all of the characters, it does not change the value to the suggested. Also it does not automatically select the desired row in the drop down like it did in 2014. Am I missing something? I created a small project that demonstrates if it would be helpful for me to send that.

Example: See the screenshot. The class column is a multicombo. I key in the 'N' and it correctly completes it with 'NESTLE'. But the window that popped does not highlight the first 'N' option as it used to and when I next hit tab key, it does not set the value of the multicombo cell to 'NESTLE' but leaves it as the prior value until I type in the entire word.

MultiColumn ComboBox

answered on 15 Jan 2016

1 answer

145 views

AutoCompleteBox, keep not match string

Hi,

My scenario is that I have a form to capture the profile of a Person, in that form I am using an AutoCompleteBox to enter the Country. I do have a Country Catalog, so the AutoCompleteBox in profile shows existing elements.

I would like to allow the user to create countries on the fly when capturing a profile. I mean: if the user types a value that does not exist on the catalog, then when clicking the button to store the profile I want to take the not-match string in AutoCompleteBox and use it first to create a Country and then store that new CountryID when saving the whole profile. And of course, the next time the user require that Country it will be available as an existing element from the catalog of countries.

But I see that not-match strings are lost once AutoCompleteBox loses focus.

Is it possible to allow AutoCompleteBox keep that not-match string so I can use it when saving the profile as I explained above?

Thanks in advance for your support,

Regards

Oscar

AutoCompleteBox

answered on 15 Jan 2016

1 answer

121 views

Text on exported chart is not smooth on Windows XP

Hi, I use the RadChartView to generate PNG images on webserver side. The problem is that in Windows XP text on charts is not smooth, but in Windows 7 it works fine. How could I achieve the desired behavior in Windows XP. Screenshots are attached.

ChartView

answered on 14 Jan 2016