One by one combobox's item. Possible or not with c#?

Question

Hi! I am in big need. I have three (3) items in my combobox: " morning " " afternoon " " good night " When I use this code: comboBox1.SelectedIndex = 1; Its displaying me the first item. Means if I write comboBox1.SelectedIndex = 2 or comboBox1.SelectedIndex = 3 ; Its will display the second or the third one. This is normal. But there is a problem. I need to display each item one by one automatically with a interval of 1 second each when I click to a button. Hope to be well understood. Thank you, Israel.

Panna Chatterjee · Answer

Add Namespace:using System.Threading; //Inside Button_Click() event write down the following code private void btnAction_Click(object sender, EventArgs e) { Control p; p = ((Button)sender).Parent; p.SelectNextControl(ActiveControl, true, true, true, true); int i = 1; if (comboBox1.SelectedIndex { comboBox1.SelectedIndex = comboBox1.SelectedIndex + i; i++; int milliseconds = 2000; Thread.Sleep(milliseconds); btnAction.PerformClick(); //Trigger click event } }

Amit Gupta · Answer

My dear friend How can you assign an event istead of an integer value, as you had already specified in your question. Timer_tick (.....) { if (combobox1.SelectedIndex combobox.SelectedIndex = combobox.SelectedIndex +1; } When you want to set the selectedIndex to 1 then reset it on your button click (whatever suits your need)

Israel · Answer

Dear Amit, See what I do as you explained. These codes work only on a button. But I should click manually each time to see the next item one by one. Doesnt display automatically as I asked to you. Sorry but I need to do it please: private void timer1_Tick(object sender, EventArgs e) { if (comboBox1.SelectedIndex comboBox1.SelectedIndex = comboBox1.SelectedIndex + 1; }

Amit Gupta · Answer

Hey You can use timer and set its interval to 1 second and write your selectedIndex logic in timer tick event.

Israel · Answer

Heeeey Amit, I am learning many things with you. Thank you very much. It's works PERFECTLY.

Amit Gupta · Answer

This is because Thread.Sleep(..) blocks the current thread, to make other events to invoked, you have to use Application.DoEvents(); comboBox1.SelectedIndex = comboBox1.SelectedIndex + i; Application.DoEvents(); i++; This will help you.

Israel · Answer

There is something very strange is upon. I do like the Panna's code but I dont understand why the textchanged event doesnt works. ... When I put these code: lblReceivingValue.Text = cbxSendingValues.Text; To display on a label when the combobox' items passing automatically one by one its doesnt works properly. Curiously it's shows only and always the last item. My problem is I need to transfert each time that a item its display one by one into my combobox. The value should appear on the label. It's appear ONLY the last item. What happen please???

Israel · Answer

Thank you Panna chatterje. Its works. Thank you also to you Amit Gupta. You are one of them who try to resolv whem I am struggling. Thank you to all.

Israel · Answer

Hi Amit, I do put the timer and set the interval to 1 second and see what I wrote on my timer tick event: comboBox1.SelectedIndex = timer1.Tick(); But it's doesnt works.