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Asked: 2026-05-11T11:58:55+00:00

I got a linq based windows project.There is a form thats saving personel’s departmant

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I got a linq based windows project.There is a form thats saving personel’s departmant , title , name surname etc..In this form there is 2 combobox item that holding title and departman objects and 1 textbox , 1 listbox.When forms loads i filled listbox with Personel Class.When listbox’s selected index change event occur i wanna fill comboDepartman and comboTitle with this Personel’s departman and Title information(getting this from DB).I have done this but there is a problem.When i have done this ComboBoxes showing me only this personel’s departman and title info not Whole Departman and Title Informations.When i fill Combobox with Whole departmans and Titles i wanna change selectedindex to personel’s departman or title.

There is a easy solution for this ?

// if DepartmanID -1 > selectedindex value than getting ArgumentOutOfRangeException so my algorithma is not working with this situation.

  if (listPersonel.SelectedItem !=null)         {              Personel p = (Personel)listPersonel.SelectedItem;              txtPersonelName.Text = p.PersonelName;              txtPersonelNo.Text = p.PersonelNo.ToString();              cmbDepartmant.SelectedIndex = Convert.ToInt32(p.DepartmantID) - 1;              cmbTitle.SelectedIndex = Convert.ToInt32(p.TitleID) - 1;         }
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1 Answer

  1. cmbDepartmant.SelectedValue = Convert.ToInt32(p.DepartmantID)
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