Hi, I have a problem with convert "Telerik.WinControls.Ui.RadDropDownList" to "System.Windows.forms.Control"

Adding:

I already tried to cast "Control" to "ComboBox" and got the following error when running the application. So I tried to cast it with "RadDropDownList":

Hello,

I'm using VS 2019 (Image 0)

Since the last update I'm getting this error trying to update projects: (image 1)

Failed to execute command.

System.IO.DirectoryNotFoundException: Could not find a part of the path 'c:\users\jonovoa\appdata\local\microsoft\visualstudio\16.0_8573c414\extensions\akzfqu3o.rq0\ProjectManagement\Upgrade\ScenarioDefinition.xml'.
   at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
   at System.IO.FileStream.Init(String path, FileMode mode, FileAccess access, Int32 rights, Boolean useRights, FileShare share, Int32 bufferSize, FileOptions options, SECURITY_ATTRIBUTES secAttrs, String msgPath, Boolean bFromProxy, Boolean useLongPath, Boolean checkHost)
   at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize)
   at System.Xml.XmlDownloadManager.GetStream(Uri uri, ICredentials credentials, IWebProxy proxy, RequestCachePolicy cachePolicy)
   at System.Xml.XmlUrlResolver.GetEntity(Uri absoluteUri, String role, Type ofObjectToReturn)
   at System.Xml.XmlTextReaderImpl.OpenUrlDelegate(Object xmlResolver)
   at System.Threading.CompressedStack.runTryCode(Object userData)
   at System.Runtime.CompilerServices.RuntimeHelpers.ExecuteCodeWithGuaranteedCleanup(TryCode code, CleanupCode backoutCode, Object userData)
   at System.Threading.CompressedStack.Run(CompressedStack compressedStack, ContextCallback callback, Object state)
   at System.Xml.XmlTextReaderImpl.OpenUrl()
   at System.Xml.XmlTextReaderImpl.Read()
   at System.Xml.XmlLoader.Load(XmlDocument doc, XmlReader reader, Boolean preserveWhitespace)
   at System.Xml.XmlDocument.Load(XmlReader reader)
   at System.Xml.XmlDocument.Load(String filename)
   at Telerik.VSX.WizardEngine.Configuration.ScenarioDefinition.Deserialize(String fileName)
   at Telerik.VSX.ProjectConfiguration.ProjectConfigurationTypeSelectorBase.GetScenario(ProjectManagementScenarioPath path)
   at Telerik.WinControls.VSX.ProjectConfigurators.ProjectConfigurationTypeSelector.ProjectUpgrade(IPropertyDataDictionary additionalPreWizardData)
   at Telerik.WinControls.VSX.ProjectConfigurators.StreamlinedProjectConfiguration.StartUpgradeWizard()
   at Telerik.WinControls.VSPackage.CommandExecutor.Execute(UInt32 commandId)
   at Telerik.VSX.VSPackage.PackageBase.CommandCallback(Object sender, EventArgs e)

I have tried to remove and reinstall from Telerik control panel, it didn't work.

I also tried removing and reinstalling the extension within visual studio. it didn't work. 

I have found that the path c:\users\jonovoa\appdata\local\microsoft\visualstudio\16.0_8573c414\extensions\akzfqu3o.rq0 (image 2)

does not contain the folder mentioned in the error description: 

c:\users\jonovoa\appdata\local\microsoft\visualstudio\16.0_8573c414\extensions\akzfqu3o.rq0\ProjectManagement 

I just noted that I have another path with all the files: (image 3)

C:\Users\jonovoa\AppData\Local\Microsoft\VisualStudio\16.0_8573c414\Extensions\p2gdkolo.2so\ProjectManagement\Upgrade

Finally:

Visual studio throws a couple of warnings due to UNRESPONSIVE EXTENSIONS, with the following offenders:

"Progress Telerik  UI for Winforms Extension version 2021.2.505.1" (image 4)

"Progess Telerik WInforms Converter version 2021.2.505.1" (image 5)

My installed version is: R2 2021 (2021.2.511.0) (image 6)

Please help me to solve this.

Thanks,

Jorge

I'm currently migrating a 160-form application to the latest Telerik framework, and I need to do some processing which is common to all forms:

- checking for, and applying a user-saved theme

- positioning the form where the user last saved it.

I could implement a method call in the _load event for each form, but I wonder if there is a better way. Maybe a kind of 'load' event which applies to all forms. Or some way to modify RadForm - whilst still making the Designer work.

Does anyone have a soltion for this which is neater than adding a method call in each of 160 forms (and remembering to do it for any ones) ?

hi

Why do I want to uncheck all the form checkboxes, but the regular checkbox is done ?!

my code is

Hello Telerik,

What is the simple way to use a "classic" DropDown Editor for the PropertyGrid without implementing a converter and the standar value but directly a datasource for the property of an object representing a relation to a collection !

Is it possible to change the items of the PropertyGridDropDownListEditor with event or should I implement a custom editor ?

I haven't seen this case covered in the doc.

Best regards

Marco Guignard

I'm trying to create simple variation on the Fluent theme. (as in article https://docs.telerik.com/devtools/winforms/tools/visual-style-builder/working-with-visual-style-builder/fluent-themes-blending which looks like exactly what I need)

I opened the copy of Visual Style Builder form the /lib...directory in my project, but I can't get further than a loading error.

I choose:

1. Open VSB
2. Choose Tools / Gneerate Fluent Theme Variation
3. Dialog "requires "Fluent" theme to be loaded..." - YES
4. Error "Failed to import theme package from recource: " (OK)
5. Empty path name not legal.

What path it it looking for, and where do I set it ?

Thanks

Hi.

I have two gridviews in a form: Master and Detail. I am trying to set the focus on Detail Grid when the Master grid UserAddedRow Event occurs. I tried with Telerik grids, but, it doesn't work. The focus always stays in the Master grid.

In other question, you answer me with the below code sample, but, this sample shows the Detail grid inside the Master grid. My customer wants to do what I am showing in the PNG attachment, in order to make the fingering fast.

The sample in PNG was developed in native VS DataGridView.

Thanks

Code sample:

  DataTable masterTable = new DataTable();
        DataTable childTable = new DataTable();

        public RadForm1()
        {
            InitializeComponent();

            masterTable.Columns.Add("Id", typeof(int));
            masterTable.Columns.Add("Name", typeof(string));
            for (int i = 0; i < 3; i++)
            {
                masterTable.Rows.Add(i, "Row" + i);
            }
            childTable.Columns.Add("Id", typeof(int));
            childTable.Columns.Add("ParentId", typeof(int));
            childTable.Columns.Add("Title", typeof(string));
            childTable.Columns.Add("Date", typeof(DateTime));
            Random rand = new Random();
            for (int i = 0; i < 20; i++)
            {
                childTable.Rows.Add(i, rand.Next(0, 3), "Child" + i, DateTime.Now.AddDays(i));
            }

            radGridView1.DataSource = masterTable;
            radGridView1.AutoSizeColumnsMode = GridViewAutoSizeColumnsMode.Fill;

            GridViewTemplate template = new GridViewTemplate();
            template.DataSource = childTable;
            template.AutoSizeColumnsMode = GridViewAutoSizeColumnsMode.Fill;
            radGridView1.MasterTemplate.Templates.Add(template);

            GridViewRelation relation = new GridViewRelation(radGridView1.MasterTemplate);
            relation.ChildTemplate = template;
            relation.RelationName = "MasterChild";
            relation.ParentColumnNames.Add("Id");
            relation.ChildColumnNames.Add("ParentId");
            radGridView1.Relations.Add(relation);

            this.radGridView1.UserAddedRow+=radGridView1_UserAddedRow; 
        } 

        private void radGridView1_UserAddedRow(object sender, GridViewRowEventArgs e)
        {
            e.Row.IsExpanded = true;
            this.radGridView1.CurrentRow = ((GridViewHierarchyRowInfo)e.Row).Views[0].TableAddNewRow;
            this.radGridView1.CurrentColumn = this.radGridView1.MasterTemplate.Templates[0].Columns[0];
            this.radGridView1.BeginEdit(); 
        }

I have the following code in the event

 private void mccbSelectTheme_SelectedValueChanged(object sender, EventArgs e)
        {
            string cc = mccbSelectTheme.EditorControl.CurrentRow.Cells[1].Value.ToString();

         }

I keep getting a System.Null reference exception when I click the dropdown arrow.  

The control is loaded with2 columns with column 1 not visible.