Hello Shahrukh,

Thank you for posting in out community.

In order to ensure that I will provide you with the most accurate support I will need some additional information regarding your scenario. Can you please answer the following questions:

• What is your edit mode, is it "row", "cell" or "dialog"?
• What is the condition that you check in the editCellStarting event? Is it just the column key or you are checking for some of the other cell values? For example:

                      editCellStarting: function(evt, ui){
                            if(ui.columnKey == "FirstName" || ui.columnKey == "LastName") {
                                   return false;
                             }
                      }

                   or

                 editCellStarting: function(evt, ui){
                            if(ui.columnKey == "FirstName" && [other_cell_value] === 5) {
                                   return false;
                             }
                  }

• Would you like to just set this column as editable for future edits or you would like to end edit mode for the current column and enter edit mode for the column that you have just enabled for editing?

This information is going to be highly appreciated and will help me decide how we should proceed further.

Looking forward to hearing from you.

What I can suggest for achieving your re`uirement is handling selectionChanged event of the igCombo editor provider. Every time the selection is changed edit mode can be ended using endEdit method (with autoCommit option set to true the newly selected value will be committed) and afterwards entered again conditionally for the column of your choice. When trying to enter edit mode, using startEdit method this will trigger  the editCellStarting event. There you can check the value of the column with the combo editor and based on this value decide whether it will be read only or editable. Ending edit mode is necessary because when row is in already edit mode calling startEdit will cause an exception.

For example:

                    {
                        name: "Updating",
						columnSettings: [
							 {
								columnKey : "City",
								editorType: "combo",
								editorOptions: {
									dataSource: cities,
									textKey: "name",
									valueKey: "name",
									selectionChanged: function(evt, ui){
									var rowID = parseInt( ui.owner.element.closest("tr").attr("data-id"));
												$("#grid").igGridUpdating("endEdit", true);
												$("#grid").igGridUpdating("startEdit", rowID, "FirstName", true); 
									}
								}
							}
						],
					
						editCellStarting: function(evt, ui){
							cellToCompareVal = ui.owner.grid.getCellValue(ui.rowID, "City");
							if(ui.columnKey == "FirstName" && cellToCompareVal !== "Sofia" ) {
								return false;
							}
						}
                    },

Attached you will find a sample illustrating my suggestion for your reference. The "City" column has a combo editor with two values - "Sofia" and "Plovdiv". If "Sofia is selected the "First Name" column is going to be editable. In all other cases this column is going to be read only. 

Please test my sample on your side and let me know if you have any additional questions regarding this matter.

4863.igGridConditionalEditing.zip