private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
{
switchItem();
}
private void switchItem()
{
var content = richTextBox1;
switch (comboBox1.SelectedValue.ToString())
{
case "Fruit":
content.Text = "Apple";
break;
default:
content.Rtf = "Not Selected";
break;
}
}
如您所见,我正在尝试获取 comboBox1 的 SelectedValue
,但出现此 object reference not set to an instance of an object
错误。我该怎么办?
最佳答案
也许您正在寻找 SelectedItem
而不是 SelectedValue
错误 object reference not set to an instance of an object
表示 SelectedValue
为 null
关于c# - 获取 comboBox1.SelectedValue,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/44360026/