You can create a custom designer for the control and put the code of adding the column in initialization of control. You can make the column unique by it's type of some properties. You can check if the control contains an existing such image column then don't add another one. A new column is born!īased on your requirements, to solve the problem, you can consider these options:Ĭheck if the control is in design mode, then don't add the column and add it only at run-time. Even you don't need to build and run, it's enough to open the form which contains the grid and make a small change in form and save it. And this continues this way and is not limited to 2 columns. Then you run the application and it adds a column in constructor. You added a column in constructor, then the designer serializes the column. Nothing changes.Ĭlearing the columns listing on the form removes the working column and leaves a column dataGridViewImageColumn1 which is just a complete empty column with the wrong name. = 'EditStatusIcons' Įdit: I also tried to use this.AutoGenerateColumns = false like in Custom DataGridView adds columns everytime I build said. Private DataGridViewImageColumn EditStatusIcons public class CustomDataGridView : DataGridView The following code is the minimal part to reproduce the problem. How can i prevent VS from copying my fields? To fix the problem i have to clear the DGV.Columns listing every now and then. When i keep editing in the form it sometimes happens that VS creates even more copies of the same columns. private CustomDataGridView customDataGridView1 In the designer of the form there is a ne image column added automatically. The first is working like it should and the second one always shows the missing x image (Had no data in it so they show both the x). When i start it without changing anything it shows me two columns. Running the program results in two image columns in the grid.Ī new form just added the component and set Dock.Fill When I drop the control onto a new form it shows up with the new column in it. I add the column in the constructor and update it on CellFormatting event. A new property changes the visibility of the column when i don't need in in a particular table. I made a custom DataGridView component which has a standard DataGridViewImageColumn inside.

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