如何在C＃中使用子字符串从组合框获取值

Question

I have a combo box which have item strings like:

1 .  Apple
2 .  Banana
3 .  Mango 

1,2,3 are category id & Apple, Banana, Mango is Category Name.

I want to know Category Id From comboBox using Category name which is sub-string of ComboBox item.

example:

I want to know the Category Id of Banana. which is 2.

Any help ?

Answer 1

Use this code to an event that should be after you selected the item in comboBox :

        string []str;
        str = comboBox1.Text.Split(' ');
        string categoryId = str[0];

Answer 2

Try the following code. It will give the CategotyId of the selected Category.

private void ComboBox1_SelectedIndexChanged(object sender, System.EventArgs e) {
    string selectedText = comboBox1.SelectedText;
    string categoryId  = selectedText.Substring(0, selectedText.IndexOf(" "));

    MesasgeBox.Show(categoryId);
}

Answer 3

    foreach (object item in cmb.Items)
    {
      string[] str = item.ToString().split(new char[] {' '}
, StringSplitOptions.RemoveEmptyEntries);
      if(str[1] == "Banana")
      {
           Console.Write(str[0]);
      }
    }

Answer 4

@Pranay Rana Your Answer Helped me: I wrote my method like that

private string get_Godown_id(string godown_name)
    {
        foreach (object item in cb_send_to.Items)
        {
            if (item.ToString().Split('.')[1].Trim() == godown_name)
            {
                return (item.ToString().Split('.')[0]);
            }
        }
        return "";
    }

Answer 5

foreach (object item in cb_send_to.Items)
    {
        if (item.ToString().Split('.')[1].Trim() == godown_name)
        {
            return (item.ToString().Split('.')[0]);
        }
    }