在窗体2的另一个列表框中搜索窗体1的列表框中的数据

Question

I have a problem with this code, I want to search on listbox4 on form2 in listbox 5 on form1.

I used this code as shown as below:

int index= eski.listbox5.FindString(listbox4.ToString());
if(index= !=-1)
    eski[enter image description here][1].listbox5.SetSelected(index ,true);
else
    MessageBox.Show("Nothing Found")

Programme finds the true index value but set selected command doesn't work..

How can I solve this problem?

Answer 1

listbox4.ToString() is just going to return the control as a string. Call listBox4.GetItemText(listBox4.SelectedItem) instead. Also, line 2 should be if (index != -1)