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break in refreshing my custom combo box column in RadGridView

I have created a custom grid column for a RadGridview which based on the row DataItem which is a class, finds the corresponding items and put them in the Combobox.
When the page loads, the custom column is freeing to be created only for the rows that are in visual and for other rows, it has been fired to be created when the user scrolls down. Unfortunately, when the user scroll the wrong combo boxes are created for each row.
For example, run the below sample and see the combobox in front of dimensionless row, which must be empty which is correct. Now scroll down and click on a cell and scroll up to the dimension row, which now have a Combobox with values which is erroneous. Note that the dimensions combo box is shifted up now!
Why the combo boxes are wrong after scrolling or windows size change?

It is Virtualization which is causing the behaviour you describe.
You can disable this on a RadGridView like so:
EnableRowVirtualization="False"
This will cause all your data to load whether it's in view or not, and if you have a lot of data this can cause significant performance issues.

Focus on the datagridview on textbox value window forms

I have a text box and a datagridview contains Customer Name column.
When i start entering the values in the textbox, I have set the focus in the grid Custmer Name in the grid.
Any one please help me.
Thanks in advance

datagridview pans on clicking a cell

I have a winforms application that has a datagridview control. Now, when I click on a cell in the datagridview control, the view shifts/pans the datagridview control, such that the cell selected is more or less in the centre of the screen. Is there any way to disable this? My users find this irritating.
The data gridview is essentially needed only to show colour codes (i.e. no text) and tooltips for each cell. I have tried
datagridView1.Enabled = false;
This solves my problem, however, I can no longer view the tooltip text.
Is there any other work-around? Is it possible to prevent the user from clicking on a cell in the first place to prevent this?

How to edit DataGridView on button Click

I have a DataGridView in which I am binding some records. I have a button Edit on my form. I want to Edit all the rows and column of the datagridview when I click on button Edit, so that user can change the data as per there need, and the data which is changed it should show in different color, so that user can recognizes that this data got changed.
till binding of grid I have done, how to edit and assign the color into changed cell I am unable to find solution.
Please something help me, with some exp. code. or some sugg.

You can try with EditMode and ReadOnly
You set EditMode = DataGridViewEditMode.EditOnEnter.
You set ReadOnly to true for the cell, row, column, and control.
Link : http://msdn.microsoft.com/en-US/library/system.windows.forms.datagridview.editmode(v=vs.80)

There is already a property for that Enable Editing.
And after that you can apply formatting with the help of DataGridView.CellValueChanged Event

multiline column in data grid view. using c#

Im using c# .net windows form application. i have a datagrid view. It has two columns.I need to make all the cells on the second column as to have multiple line. i.e a multiline column. I will edit something in a cell and press enter key. the cursor should reach the next line in the same cell. It should not go to the next cell. What should i do?

If you set the column default style like:
this.dataGridView1.Columns[index].DefaultCellStyle.WrapMode = DataGridViewTriState.True;
you can enter multiline by pressing SHIFT-ENTER
Otherwise you could change the cell control editor overriding dataGridView or handling EditingControlShowing event (the default control is a textbox)
EDIT:
there's almost the same question here:
DataGridView: How can I make the enter key add a new line instead of changing the current cell?