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Hi

After fetching information from the database and performing calculations, I want to add the information to the data grade view.
I have already made the columns based on the data type
I get this error when running the program:

"Rows can not be add programmatically added to the rad radgridview's  Rows collection when the control is data-bound"

This error does not always occur and it happens by accident

Whatever I searched for, I did not find the reason

Maybe my solution to this is wrong

Thank you in advance for your support

var item = new GridViewDataRowInfo(dailyGridView.MasterView);

                        if (dailyGridView.Columns.Any(c => c.Name == "Code"))
                            item.Cells["Code"].Value = personelInfo.First().Code;
                        if (dailyGridView.Columns.Any(c => c.Name == "FirstName"))
                            item.Cells["FirstName"].Value = personelInfo.First().FirstName;
                        if (dailyGridView.Columns.Any(c => c.Name == "LastName"))
                            item.Cells["LastName"].Value = personelInfo.First().LastName;
                        if (dailyGridView.Columns.Any(c => c.Name == "Date"))
                            item.Cells["Date"].Value = PersianDateTime.FromDateTime(report.Date).ToShortDateString();
                        if (dailyGridView.Columns.Any(c => c.Name == "DayName"))
                            item.Cells["DayName"].Value = PersianDateTime.FromDateTime(report.Date).DayName;
And more line ...


dailyGridView.Rows.Add(item);

I'm using the RadSpreadProcessing library to import Excel files, process them, and export back out.

I come across an issue when cells have complex formulas.

These complex formulas have dependencies on other cell values which those values get set (SetValue(...) method) while processing the worksheet after its been imported.

When I try to get the cell value of the complex formula using this call:

cellSelection.GetValue().Value.GetResultValueAsString(cellSelection.GetFormat().Value)

it returns me a value of #NAME?.

When I try to get the value of the complex formula using this call:

cellSelection.GetValue().Value

I noticed a ResultValueType of Error.

But when the workbook is exported back out the cells do not contain #NAME? in them. They contain the correctly auto-calculated values.

In the attached ComplexFormulaIssue.PNG, Row 1 column A value gets set while processing the worksheet using the SetValue(...) method (set it from NX: 12 to 12 for example).

Row 1 Column B formula depends on Row 1 column A value (which works fine since it's an easier formula I guess. No issue here).

Row 1 Column C and D are normal text values.

Row 1 Column E has a complex formula that has dependencies to all the other cell values (this is the one that gives me issues).

I attached 2 other PNGs as examples of formulas I used in Row 1 Columns B and E.

In our application, we were using the standard windows CheckBox.

We have an Overrides onkeypress to trap the ENTER key and send a TAB (so enter moves to the next field on the form). This works great, and for the user to toggle a checked/non-checked state, the space bar is hit.

When using the RadCheckBox, the space bar still changes the checked state, but also when i hit ENTER, it changes the checked state and moves to the next field. 

I do not want it to change the checked state on the ENTER, i only want it to move to the next field.

Thanks.

Hi

I need floating labels in RadTextBox and RadDropDownList using telerik winforms.

Telerik has this feature implemented in their Floating Labels in kendo.react library for various controls.

However I'm using Telerik UI for Winforms R2 2020 which does not support this. In R2 2021 Telerik has added support only for floating labels Floating Labels in RadTextBox/RadTextBoxControl but not for RadDropDownList. I can't upgrade to R2 2021.

I need some customization tips to implement floating labels in both RadTextBox and RadDropDown using Telerik Winforms

Hi!

I think we have a problem with Telerik RadGridView.

We are using RadGridView with several columns (GridViewTextBoxColumn and GridViewDecimalColumn).

Every column has a concrete header text which is localized.
Every time we have tried adding a new column somewhere in the middle of the collection, Telerik RadGridView shifts all the columns that follow the inserted column by one place. It means that we have to change the translation for those shifted columns after each addition, and it is very frustrating and sometimes our translation was messed up. The same situation is with removing columns.

Do you have any knowledge about the described behavior?
Do you know how can I avoid shifting columns, and thus changing the translation?

Thank you for the answer in advance!

Using VS2019 and 2022.1.228.40 of Telerik.  How do I change both the Hover color and Selected color of the expand button from yellow/dark yellow to colors of my choice?

I found this post that looks like what I want.  But when I try the code in the ViewCellFormatting event, I get an error that SignStyle is not a member of GridGroupExpanderCellElement.

Thanks for your help.

We use Telerik UI for Winforms extensively in our Windows application.  We have migrated almost all of our UI to use Telerik UI for Winforms but we were using a 2014 release of Telerik.  Last month we updated to the latest (Q1 2022) Telerik UI for Winforms and began converting the last 3 major tree controls in our UI to use the RadTreeView.  The biggest of these tree controls can have a lot of nodes.  Some of our customers will exceed 750000 nodes in their installations.

We have found that when sorting is enabled, especially our custom sort which is necessary for our implementation, the tree control takes a VERY long time to load and also a very long time to repopulate when a leaf node with its children is removed and then re-added.  Of note when we remove/re-add a leaf node is that if I put a breakpoint into our NodeComparer implementation I see that many nodes from all over the tree are being compared.  The comparisons include nodes that are at the root of the tree and were not affected since the node(s) removed were 4 or 5 levels down and restricted in scope to just one sub-collection.  I am very surprised that the RadTreeView re-sorts ALL of the tree nodes rather than just the nodes in the affected collection?

Are there ways to restrict sorting to just the collection affected by the addition/removal of a node?

Hello, 

My question is: How can I hide the on hover highlighting and also when the user clicks on an item highlighting? I just want a flat color with no highlighting on hover and on clicking? I have tried the .ListViewElement.ViewElement.HighlightColor but that doesn't seem to work. 

Thank you for helping.