ComboBox1.SelectedIndex= ComboBox1.FindString("Matching String");

在windows窗体中尝试此操作。

这个方案是基于MSDN的，我做了一些修改。

It finds exact or PART of string and sets it. private int lastMatch = 0; private void textBoxSearch_TextChanged(object sender, EventArgs e) { // Set our intial index variable to -1. int x = 0; string match = textBoxSearch.Text; // If the search string is empty set to begining of textBox if (textBoxSearch.Text.Length != 0) { bool found = true; while (found) { if (comboBoxSelect.Items.Count == x) { comboBoxSelect.SelectedIndex = lastMatch; found = false; } else { comboBoxSelect.SelectedIndex = x; match = comboBoxSelect.SelectedValue.ToString(); if (match.Contains(textBoxSearch.Text)) { lastMatch = x; found = false; } x++; } } } else comboBoxSelect.SelectedIndex = 0; }

希望我能帮上忙!

这应该可以达到目的:

Combox1.SelectedIndex = Combox1.FindStringExact("test1")

请试试这个方法，它对我很有效:

Combobox1.items[Combobox1.selectedIndex] = "replaced text";

在组合框中找到mySecondObject (MyObject类型)(包含MyObjects列表)并选择该项:

foreach (MyObject item in comboBox.Items)
{
   if (item.NameOrID == mySecondObject.NameOrID)
    {
        comboBox.SelectedItem = item;
        break;
    }
}

所有设置组合框项的方法、技巧和代码行都将在组合框具有父级之前不起作用。