Questions on UI for WinForms Forum

3 answers

665 views

[Solved] Suppress/Disable Cut/Copy/Paste Context Menu

We are having an issue with displaying only our custom context menu (do not want to show cut/copy/paste context menu) when the DropDownStyle is DropDown. When the DropDownStyle is DropDownList then the context menu works as expected.

On a right-click (or Apps key press: Keys.Apps) the cut/copy/paste context menu is shown for the editor textbox. We were able to work around not showing the context menu for the mouse right-click action by absorbing the MouseDown event of the TextBox (

radDropDownList.DropDownListElement.TextBox.MouseDown += radDropDownListTextBox_MouseDown

) and then displaying our custom context menu. We attempted to do a similar workaround by subscribing to the KeyDown event of the textbox editor component of the RadDropDownList, but we are unable to suppress the context menu.

Is there a way (or workaround) for suppressing the cut/copy/paste context menu that is shown for the RadDropDownList textbox editor component (especially for the Apps key press)?

Thank you for any help and information you can provide.
Jeremy

DropDownList

answered on 21 Oct 2010

14 answers

947 views

Scrool Bar on X-Axis

hi,

I have drawn a graph with Date on X-Axis. The width of the chart is 400px only.
whenever I am displaying the chart with 10 days data, it is displaying as required.
But when displaying the chart with 100 days data, the chart becomes more condensed so as to show all 100 days data within 400px.

My requirement is to display a scroll bar on X-axis, when ever the data is more than the 10 days(Approximately).
Note: Y-axis should be constant. (i.e whenever i am scrolling, Y-axis should appear, only the X-axis data needs to scroll).

Thanks and Regards,
chandra.

Chart (obsolete as of Q1 2013)

answered on 21 Oct 2010

6 answers

358 views

[Solved] Three problems with adding new row.

Hi
Version: 2010 Q2 SP2

1. When grid has at least one real row in row for adding new rows there is text:
    “Click here to add new row”.
    Problem is when grid is empty and there is only row for adding new rows.
    Then this row is selected and there is no text “Click here to add new row”.
    It might be confusing to the user – user might not know how to add new row.

How can I display text “Click here to add new row” in row for adding new rows if grid is empty (there are no real rows)?

2. If during adding new row user presses Esc button adding is canceled and text “Click here to add new row” is displaying – this is ok.
How can I know that user canceled adding new row? Is there any event for this?

3. Can I use some another text than “Click here to add new row”?
I would like to define my own text for adding new rows.

Regards.

GridView

answered on 21 Oct 2010

3 answers

139 views

Problem with Gradients/Backgrounds

Hi everybody

I'm designing a "Look & Feel" of an Application, the problem is about Gradients and the Backgrounds.

I have a button with Gradients in "Normal" and "Hover" status. In the "Press" status I have a Solid Background.
So when my Button is "Normal" it is ok. When I "Hover" it is ok. But when I "Press" it. The "Normal" and "Hover" Gradient it is Solid now.

I don't know what is happening.

What I'm doing wrong?

I hope you can help me thanks.

Themes and Visual Style Builder

answered on 21 Oct 2010

4 answers

125 views

the grid adds empty rows or saving place for a scroll

Hi
It happens sometimes that the grid adds empty rows or saving place for a scroll, although there is no scroll. Is there anything to do for preventing it from happening?

Thank u.

GridView

answered on 21 Oct 2010

2 answers

144 views

[Solved] Coloring added/modifed rows

What is the best way to colorize newly added rows or rows that have been modified in a radgrid?

I want a visual cue for my users of needs to be saved.

GridView

answered on 21 Oct 2010

4 answers

141 views

[Solved] Get a reference to the cell in CellValidated?

Is there a way to obtain the cell in the CellValidated event?

I want to check if cell.ContainsErrors, but I don't seem to be able to get the Cell.

grid1.rows(e.rowIndex).Cells(e.columnIndex) provides the CellInfo, not the cell itself.

Any tips would be appreciated.

Thanks!

GridView

answered on 21 Oct 2010

13 answers

308 views

[Solved] Change backcolor of a cell when current row is changing

I have a scenario, where a user is editing a row. Based on whether this row is in a modified state or not, I want to paint the 5th cell ( i.e. 'Modified' column) with a skyblue back color when the current row is changing. I tried using a condition object in form load event, but it failed to apply when I leave the current row after changing it. When current row is changing, I am determining whether the row was modified and if yes , then I am setting the 'Modified' column to 'Yes', and I am having no problems with this part of the logic.
I am using Q1 2008 SP1 version.

My code for condition object that I used is:

ConditionalFormattingObject obj =

new ConditionalFormattingObject("MyCondition", ConditionTypes.Equal, "Yes", "",true);

obj.CellBackColor = Color.SkyBlue;

obj.CellForeColor = Color.Red;

obj.TextAlignment = ContentAlignment.MiddleRight;

attributesRadGridView.Columns["Modified"].ConditionalFormattingObjectList.Add(obj);

How can I paint a cell in above scenario or paint the whole row? Either will do.

Thanks
Sunil

GridView

answered on 20 Oct 2010

4 answers

302 views

Hierarchical grid view - Index was out of range grid exception.

Hi,

When I create a simple hierarchical grid view (example code snippet (4) attached below) I'm getting an exception (2) with a stack trace (3) you can find below. t occurs always when there are 3 or more hierarchy levels. Below I'm describing also reproducibility steps.

Any patch or feedback if I''m doing anything wrong would be appreciated.

Regards.

Reproducibility Steps:

1. Use code snippet

2. Expand all nodes

3. Collapse first root node

1 Exception

ArgumentOutOfRangeException

{"Index was out of range. Must be non-negative and less than the size of the collection.\r\nParameter name: index"}

2 Stack trace

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

02.at System.ThrowHelper.ThrowArgumentOutOfRangeException()

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

04.at Telerik.WinControls.UI.PriorityWeakReferenceList.<ReverseForEach>d__0.MoveNext()

05.

at Telerik.WinControls.UI.GridViewEventProcessEntity.ProcessCollection(GridViewEvent gridEvent, PriorityWeakReferenceList list, GridEventProcessMode processMode)

06.at Telerik.WinControls.UI.GridViewEventProcessEntity.ProcessEvent(GridViewEvent gridEvent)

07.at Telerik.WinControls.UI.GridViewSynchronizationService.NotifyListeners(GridViewEvent gridEvent)

08.at Telerik.WinControls.UI.GridViewSynchronizationService.FlushEvents()

09.at Telerik.WinControls.UI.GridViewSynchronizationService.DispatchEvent(GridViewEvent gridEvent)

10.

at Telerik.WinControls.UI.GridViewSynchronizationService.DispatchEvent(GridViewTemplate template, GridViewEvent eventData, Boolean postUI)

11.

at Telerik.WinControls.UI.GridViewRowInfo.DispatchEvent(Int32 id, GridEventType type, GridEventDispatchMode dispatchMode, Object originator, Object[] arguments)

12.at Telerik.WinControls.UI.GridViewRowInfo.OnPropertyChanged(PropertyChangedEventArgs args)

13.at Telerik.WinControls.UI.GridViewDataRowInfo.OnPropertyChanged(PropertyChangedEventArgs e)

14.at Telerik.WinControls.UI.GridViewHierarchyRowInfo.OnPropertyChanged(PropertyChangedEventArgs e)

15.at Telerik.WinControls.UI.GridViewRowInfo.SetBooleanProperty(String propertyName, Int32 propertyKey, Boolean value)

16.at Telerik.WinControls.UI.GridViewRowInfo.set_IsExpanded(Boolean value)

17.

at Telerik.WinControls.UI.GridGroupExpanderCellElement.expander_RadPropertyChanged(Object sender, RadPropertyChangedEventArgs e)

18.at Telerik.WinControls.RadPropertyChangedEventHandler.Invoke(Object sender, RadPropertyChangedEventArgs e)

19.at Telerik.WinControls.RadObject.OnPropertyChanged(RadPropertyChangedEventArgs e)

20.at Telerik.WinControls.RadElement.OnPropertyChanged(RadPropertyChangedEventArgs e)

21.at Telerik.WinControls.VisualElement.OnPropertyChanged(RadPropertyChangedEventArgs e)

22.at Telerik.WinControls.RadComponentElement.OnPropertyChanged(RadPropertyChangedEventArgs e)

23.at Telerik.WinControls.RadItem.OnPropertyChanged(RadPropertyChangedEventArgs e)

24.at Telerik.WinControls.UI.GridExpanderItem.OnPropertyChanged(RadPropertyChangedEventArgs e)

25.

at Telerik.WinControls.RadObject.RaisePropertyNotifications(RadPropertyValue propVal, Object oldValue, Object newValue, ValueSource oldSource)

26.

at Telerik.WinControls.RadObject.SetValueCore(RadPropertyValue propVal, Object propModifier, Object newValue, ValueSource source)

27.

at Telerik.WinControls.RadElement.SetValueCore(RadPropertyValue propVal, Object propModifier, Object newValue, ValueSource source)

28.at Telerik.WinControls.RadObject.SetValue(RadProperty property, Object value)

29.at Telerik.WinControls.UI.GridExpanderItem.set_Expanded(Boolean value)

30.at Telerik.WinControls.UI.GridExpanderItem.OnMouseUp(MouseEventArgs e)

31.at Telerik.WinControls.RadElement.OnCLREventsRise(RoutedEventArgs args)

32.at Telerik.WinControls.RadElement.OnBubbleEvent(RadElement sender, RoutedEventArgs args)

33.at Telerik.WinControls.RadItem.OnBubbleEvent(RadElement sender, RoutedEventArgs args)

34.at Telerik.WinControls.RadElement.RaiseBubbleEvent(RadElement sender, RoutedEventArgs args)

35.at Telerik.WinControls.RadItem.RaiseBubbleEvent(RadElement sender, RoutedEventArgs args)

36.at Telerik.WinControls.RadElement.RaiseRoutedEvent(RadElement sender, RoutedEventArgs args)

37.at Telerik.WinControls.RadElement.DoMouseUp(MouseEventArgs e)

38.at Telerik.WinControls.RadElement.CallDoMouseUp(MouseEventArgs e)

39.at Telerik.WinControls.ComponentInputBehavior.OnMouseUp(MouseEventArgs e)

40.at Telerik.WinControls.RadControl.OnMouseUp(MouseEventArgs e)

41.at Telerik.WinControls.UI.RadGridView.OnMouseUp(MouseEventArgs e)

42.at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)

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

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

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

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

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

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

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

50.

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

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

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

53.at System.Windows.Forms.Application.Run(Form mainForm)

54.at TelerikGrid.Program.Main() in C:\Users\mbandrowski\Desktop\proof\TelerikGrid\TelerikGrid\Program.cs:line 18

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

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

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

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

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

60.at System.Threading.ThreadHelper.ThreadStart()

3. Code snippet:

001.using System;

002.using System.Collections.Generic;

003.using System.ComponentModel;

004.using System.Data;

005.using System.Drawing;

006.using System.Linq;

007.using System.Text;

008.using System.Windows.Forms;

009.using Telerik.WinControls.UI;

010.

011.namespace TelerikGrid

012.{

013.

014. public class a

015. {

016. public int IdA

017. {

018. get;

019. set;

020. }

021.

022. public string strPropertrya

023. {

024. get;

025. set;

026. }

027. }

028.

029. public class b

030. {

031. public int IdA

032. {

033. get;

034. set;

035. }

036.

037. public int IdB

038. {

039. get;

040. set;

041. }

042.

043. public string strPropertryb

044. {

045. get;

046. set;

047. }

048. }

049.

050. public class c

051. {

052. public int IdB

053. {

054. get;

055. set;

056. }

057.

058. public int IdC

059. {

060. get;

061. set;

062. }

063.

064. public string strPropertryc

065. {

066. get;

067. set;

068. }

069. }

070.

071. public partial class Form1 : Form

072. {

073. BindingList<a> aList = new BindingList<a>();

074. BindingList<b> bList = new BindingList<b>();

075. BindingList<c> cList = new BindingList<c>();

076.

077. public Form1()

078. {

079. InitializeComponent();

080.

081. aList.Add(new a() { IdA = 1, strPropertrya = "asd" });

082. aList.Add(new a() { IdA = 2, strPropertrya = "fsds" });

083.

084. bList.Add(new b() { IdA = 1, IdB = 1, strPropertryb = "xcvxbd" });

085. bList.Add(new b() { IdA = 1, IdB = 2, strPropertryb = "cbvasd" });

086. bList.Add(new b() { IdA = 2, IdB = 3, strPropertryb = "x54xsd" });

087. bList.Add(new b() { IdA = 2, IdB = 4, strPropertryb = "45fasd" });

088.

089. cList.Add(new c() { IdC = 1, IdB = 1, strPropertryc = "12435d" });

090. cList.Add(new c() { IdC = 2, IdB = 1, strPropertryc = "c34asd" });

091. cList.Add(new c() { IdC = 3, IdB = 2, strPropertryc = "x234sd" });

092. cList.Add(new c() { IdC = 4, IdB = 2, strPropertryc = "234asd" });

093. cList.Add(new c() { IdC = 5, IdB = 3, strPropertryc = "x234bd" });

094. cList.Add(new c() { IdC = 6, IdB = 3, strPropertryc = "5243sd" });

095. cList.Add(new c() { IdC = 7, IdB = 4, strPropertryc = "x34234" });

096. cList.Add(new c() { IdC = 8, IdB = 4, strPropertryc = "45324d" });

097.

098. abindingSource.DataSource = aList;

099. bbindingSource.DataSource = bList;

100. cbindingSource.DataSource = cList;

101.

102. GridViewTemplate btempate = new GridViewTemplate();

103. btempate.DataSource = bbindingSource;

104. radGridView1.MasterTemplate.Templates.Add(btempate);

105.

106. GridViewRelation brelation = new GridViewRelation(radGridView1.MasterTemplate);

107. brelation.ChildTemplate = btempate;

108. brelation.ChildColumnNames.Add("IdA");

109. brelation.ParentColumnNames.Add("IdA");

110. radGridView1.Relations.Add(brelation);

111.

112.

113. GridViewTemplate ctemplate = new GridViewTemplate();

114. ctemplate.DataSource = cbindingSource;

115. btempate.Templates.Add(ctemplate);

116.

117. GridViewRelation crelation = new GridViewRelation(btempate);

118. crelation.ChildTemplate = ctemplate;

119. crelation.ChildColumnNames.Add("IdB");

120. crelation.ParentColumnNames.Add("IdB");

121. radGridView1.Relations.Add(crelation);

122.

123.

124. abindingSource.ResetBindings(true);

125. bbindingSource.ResetBindings(true);

126. cbindingSource.ResetBindings(true);

127.

128.

129. radGridView1.EnableGrouping = true;

130. radGridView1.MasterTemplate.EnableFiltering = true;

131. radGridView1.MasterTemplate.ShowFilteringRow = true;

132. radGridView1.ReadOnly = true;

133. radGridView1.SelectionMode = GridViewSelectionMode.FullRowSelect;

134.

135.

136. radGridView1.MasterTemplate.AutoSizeColumnsMode = GridViewAutoSizeColumnsMode.None;

137. radGridView1.MasterTemplate.Templates[0].AutoSizeColumnsMode = GridViewAutoSizeColumnsMode.None;

138. radGridView1.MasterTemplate.EnableAlternatingRowColor = true;

139. radGridView1.MasterTemplate.Templates[0].EnableAlternatingRowColor = true;

140. }

141.

142.

143. /// <summary>

144. /// Required designer variable.

145. /// </summary>

146. private System.ComponentModel.IContainer components = null;

147.

148. /// <summary>

149. /// Clean up any resources being used.

150. /// </summary>

151. /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>

152. protected override void Dispose(bool disposing)

153. {

154. if (disposing && (components != null))

155. {

156. components.Dispose();

157. }

158. base.Dispose(disposing);

159. }

160.

161. #region Windows Form Designer generated code

162.

163. /// <summary>

164. /// Required method for Designer support - do not modify

165. /// the contents of this method with the code editor.

166. /// </summary>

167. private void InitializeComponent()

168. {

169. this.components = new System.ComponentModel.Container();

170. Telerik.WinControls.UI.GridViewDecimalColumn gridViewDecimalColumn27 = new Telerik.WinControls.UI.GridViewDecimalColumn();

171. Telerik.WinControls.UI.GridViewTextBoxColumn gridViewTextBoxColumn27 = new Telerik.WinControls.UI.GridViewTextBoxColumn();

172. this.radGridView1 = new Telerik.WinControls.UI.RadGridView();

173. this.abindingSource = new System.Windows.Forms.BindingSource(this.components);

174. this.bbindingSource = new System.Windows.Forms.BindingSource(this.components);

175. this.cbindingSource = new System.Windows.Forms.BindingSource(this.components);

176. ((System.ComponentModel.ISupportInitialize)(this.radGridView1)).BeginInit();

177. ((System.ComponentModel.ISupportInitialize)(this.abindingSource)).BeginInit();

178. ((System.ComponentModel.ISupportInitialize)(this.bbindingSource)).BeginInit();

179. ((System.ComponentModel.ISupportInitialize)(this.cbindingSource)).BeginInit();

180. this.SuspendLayout();

181. //

182. // radGridView1

183. //

184. this.radGridView1.Dock = System.Windows.Forms.DockStyle.Fill;

185. this.radGridView1.Location = new System.Drawing.Point(0, 0);

186. //

187. // radGridView1

188. //

189. gridViewDecimalColumn27.DataType = typeof(int);

190. gridViewDecimalColumn27.FieldName = "IdA";

191. gridViewDecimalColumn27.HeaderText = "IdA";

192. gridViewDecimalColumn27.IsAutoGenerated = true;

193. gridViewDecimalColumn27.Name = "IdA";

194. gridViewDecimalColumn27.TextAlignment = System.Drawing.ContentAlignment.MiddleRight;

195. gridViewTextBoxColumn27.FieldName = "strPropertrya";

196. gridViewTextBoxColumn27.HeaderText = "strPropertrya";

197. gridViewTextBoxColumn27.IsAutoGenerated = true;

198. gridViewTextBoxColumn27.Name = "strPropertrya";

199. this.radGridView1.MasterTemplate.Columns.AddRange(new Telerik.WinControls.UI.GridViewDataColumn[] {

200. gridViewDecimalColumn27,

201. gridViewTextBoxColumn27});

202. this.radGridView1.MasterTemplate.DataSource = this.abindingSource;

203. this.radGridView1.Name = "radGridView1";

204. this.radGridView1.Padding = new System.Windows.Forms.Padding(0, 0, 0, 1);

205. this.radGridView1.Size = new System.Drawing.Size(478, 415);

206. this.radGridView1.TabIndex = 0;

207. this.radGridView1.Text = "radGridView1";

208. //

209. // abindingSource

210. //

211. this.abindingSource.DataSource = typeof(a);

212. //

213. // bbindingSource

214. //

215. this.bbindingSource.DataSource = typeof(b);

216. //

217. // cbindingSource

218. //

219. this.cbindingSource.DataSource = typeof(c);

220. //

221. // Form1

222. //

223. this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);

224. this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;

225. this.ClientSize = new System.Drawing.Size(478, 415);

226. this.Controls.Add(this.radGridView1);

227. this.Name = "Form1";

228. this.Text = "Form1";

229. ((System.ComponentModel.ISupportInitialize)(this.radGridView1)).EndInit();

230. ((System.ComponentModel.ISupportInitialize)(this.abindingSource)).EndInit();

231. ((System.ComponentModel.ISupportInitialize)(this.bbindingSource)).EndInit();

232. ((System.ComponentModel.ISupportInitialize)(this.cbindingSource)).EndInit();

233. this.ResumeLayout(false);

234.

235. }

236.

237. #endregion

238.

239. private Telerik.WinControls.UI.RadGridView radGridView1;

240. private System.Windows.Forms.BindingSource abindingSource;

241. private System.Windows.Forms.BindingSource bbindingSource;

242. private System.Windows.Forms.BindingSource cbindingSource;

243. }

244.}

GridView

answered on 20 Oct 2010

2 answers

171 views

How to Override List Box Items Theme Properties

Hi~3cbr /~3e I am using Telerik Rad Q2 Controls for Winforms. I have following two questions and I have searched a lot but could not found.~3cbr /~3e ~3cbr /~3e ~3col~3e ~3cli~3e~26nbsp~3bHow I can assign different ForeColors for list Box Items if ListBox have a theme.~3c/li~3e ~3cli~3e~26nbsp~3bHow to Remove the bottom scroll bar so that if the contents are large then display on multiple lines ~28Autoscroll property of listbox is false. but till bottom scroll bar automatically displays~29 ~26nbsp~3b~26nbsp~3b~3c/li~3e ~3c/ol~3e Please response early. Thanks in advance~26nbsp~3b Ghulam Haider

ComboBox and ListBox (obsolete as of Q2 2010)

answered on 20 Oct 2010