AutoComplete when entering Chinese

Hi lou jason,

To filter the control you can use its filter functionality. You can read more about it in the RadDropDownList Filtering article. In your case, I am not sure how to catch the moment when the user presses Space to autocomplete the word. One approach which comes to my mind is to subscribe to the TextChanged event of the TextBox inside the control. If the text matches a specific word, filter the control. Here is what I have in mind.

public Form1()
{
    InitializeComponent();
    this.radDropDownList1.DropDownListElement.TextBox.TextChanged += TextBox_TextChanged;
}

private void TextBox_TextChanged(object sender, EventArgs e)
{
    if (this.radDropDownList1.DropDownListElement.TextBox.Text == "检查")
    {
        this.radDropDownList1.Filter = FilterItem;
    }
}

private bool FilterItem(RadListDataItem item)
{
    if (item.Text.Contains("检查"))
    {
        return true;
    }
    return false;
}

You can also see how it is working on my side:

I hope that this approach will work for you.

Regards,
Dinko | Tech Support Engineer
Progress Telerik