How to programmatically uncheck a checkbox in a checkedListBoxin a c# form?

Question

I want to write a method that, based on a condition, unchecks only a certain checkbox in a list of checkboxes in c#. I've already assigned the variable "money" a value, determined the index of the checkbox in the list, and assigned a global variable called "index" to its value. Additionally, the string entered for checkedList Name is the same as the name of the checkedListBox.

Here's my code:

public void updateResources(String checkedListName, int cost) { if (money < cost) { if (checkedListName == "checkedListBoxBasics") { //uncheck box at index } else if (checkedListName == "checkedListBoxConstruction") { //uncheck box at index } //... more else if statements } else { //implement input variables with other external variables } }

Anu Viswan · Accepted Answer · 2019-12-21 19:13:30Z

If you already know the index of Checkbox that needs to change the state, you could use CheckListBox.SetItemCheckState method. For example,

 checkedListBoxBasics.SetItemCheckState(index, CheckState.Checked);

or for unchecking

checkedListBoxBasics.SetItemCheckState(index, CheckState.Unchecked);

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