label text need't to update

Question

Hi all i made a doubleclick event in a dataGridView all i need to when i double click on row save the data in the row to a global List declered in a class file and then change some labels text in another form depend on this List. But what happens with me all thing is right after i make the 1st double click and close the 2nd form (that contans the labels) after i open the 2nd form again and do double click in the 1st form nothing happens but when i do many clicks it works. the code of the celldoubleclick: private void dataGridView1_CellDoubleClick( object sender DataGridViewCellEventArgs e) { GlobalVariables.CustomerInfoList.Add(dataGridView1.Rows[dataGridView1.SelectedRows[0].Index].Cells[0].Value.ToString()); GlobalVariables.CustomerInfoList.Add(dataGridView1.Rows[dataGridView1.SelectedRows[0].Index].Cells[1].Value.ToString()); GlobalVariables.CustomerInfoList.Add(dataGridView1.Rows[dataGridView1.SelectedRows[0].Index].Cells[2].Value.ToString()); GlobalVariables.CustomerInfoList.Add(dataGridView1.Rows[dataGridView1.SelectedRows[0].Index].Cells[3].Value.ToString()); GlobalVariables.CustomerInfoList.Add(dataGridView1.Rows[dataGridView1.SelectedRows[0].Index].Cells[7].Value.ToString()); } the code of global variables class GlobalVariables { public static string connectionString; public static string user = User ; public static string placeName =  ; public static string permissions =  ; public static List string > CustomerInfoList = new List string >(); } the code of 2nd form happens in timer private void timer1_Tick( object sender EventArgs e) { if (GlobalVariables.CustomerInfoList.Count != 0) { customerIdNumberLabel.Text = GlobalVariables.CustomerInfoList[0]; customerNameTB.Text = GlobalVariables.CustomerInfoList[1] +   + GlobalVariables.CustomerInfoList[2] +   + GlobalVariables.CustomerInfoList[3]; mobileTB.Text = GlobalVariables.CustomerInfoList[4]; customerIdNumberLabel.Visible = true ; GlobalVariables.CustomerInfoList.Clear(); } }

Amit Gupta · Answer

As you said in your earlier post that you only want to show the datagrid's data to 2nd form as you had used timer to show thats why it is taking time to load the value and sometimes your timer fails to start. There are 2 scenario 1. If you want to keep your 2nd form open and only reload the data whenever datagrid clicked doubled then just call the form load event when you done setting value to static variable. 2. If you want to close and reopen the 2nd form when double clicked then formload event will work well

Mohammed Gamal · Answer

i need my action happens while the two form open the for i use timer and if i use formload event it will happens once.

Amit Gupta · Answer

Create a formload event of form2 and load your global variable to textboxes.

Mohammed Gamal · Answer

I do not need to do any modifiying on the datagraidview just double click on datagraidview from 1st form and fill textbox in the 2nd form. exactly what happens when i do the 1st double click it works fine without any problem but after i clode the 2nd form and open it again it need many double clicks to update the text of the textboxs. I create a breackpoint to see what happens after i double click on the datagraidview the textboxs changes correct on the code but do not appers on the screen

Amit Gupta · Answer

You want to say that when you double click on the datagridview the selected row's value is to be put in your second form and after modifying the value on the second form and user clicks OK then the modified value to be visible on the datagridview. If this was the scenario then why not allowing the user to edit directly on the datagridview it will be more user friendly to user to edit on it instead double clicking and modifying it on the another form. Moreover coming to your question I think there is no need to use timer to show the data you can simply apply that timer_tick 's event code to Form_Load event this will be more performance affective. Good Luck!!

Mohammed Gamal · Answer

many thanks Amit for your reply i have to form 1st form have the datagraidview and the 2nd textboxs i need when i select or double click row inthe datagraidview fill the textboxs the the 2nd form like this picture

Amit Gupta · Answer

Well I just cannot understand why you are using the timer to update the value. Instead you can use the cellbeforeedit and cellendediting events (just check something like events as I am not with my system to lookup for the exact events). Save your data before editing and apply your logic after editing.