C# Listbox set selected item

问题

i have a C# listbox with the values

Profile 1
Profile 2
Profile 3

I want to have Profile 2 selected when the form loads. How do I do this?

回答1:

Set the ListBox.SelectedIndex property in the Form.Shown event.
For example:

public Form1()
{
    InitializeComponent();

    // Adding the event handler in the constructor
    this.Shown += new EventHandler(Form1_Shown);
}    

private void Form1_Shown(object sender, EventArgs e)
{
    myListBox.SelectedIndex = 1;
}

回答2:

Put following code in Form.Loaded event:

listBox1.SelectedItem = "Profile 2";

回答3:

listBox1.Items.Add("Profile 1");

listBox1.Items.Add("Profile 2");

listBox1.Items.Add("Profile 3");

listBox1.SelectedIndex = 1;

来源：https://stackoverflow.com/questions/4453439/c-sharp-listbox-set-selected-item