Question

在Combobox中显示无数据，更改两个属性 AutoCompleteMode ---- SuggestAppend和AutoCompleteSource ---我尝试过的CustomeSource代码

$(window).on('load', function(){
    var delay = 5000;
    If ( $('.bg').hasClass('pressed') ) {
        delay = 2000; //set delay to 2 sec,
    }

    $('.btn').on('click', function() {
        $('.bg').addClass('pressed');
    });

    $('.bg').animate({
        'background-color': 'red'
    }, delay);
});

AutoCompleteStringCollection对象具有所有项目，但组合框不显示任何内容

Answer 1

您需要设置以下属性：

comboBox1.AutoCompleteMode = AutoCompleteMode.SuggestAppend; 
comboBox1.AutoCompleteSource = AutoCompleteSource.CustomSource;

这是完整的代码。

    AutoCompleteStringCollection mycol = new AutoCompleteStringCollection {
        "Select product"
    };
    using (SqlConnection con = createconnection()) {
        using (SqlCommand cmd = new SqlCommand ("SELECT Pname FROM product")) {
            using (SqlDataReader reader = cmd.ExecuteReader ()) {
                while (reader.Read ()) {
                    mycol.Add (Convert.ToString (reader[0]));
                }
            }
        }
    }

    comboBox1.AutoCompleteMode = AutoCompleteMode.SuggestAppend;
    comboBox1.AutoCompleteSource = AutoCompleteSource.CustomSource;
    comboBox1.AutoCompleteCustomSource = mycol;

编辑：我想你想要在下拉列表中显示项目而不是自动完成。在这种情况下，您需要添加项目。

    comboBox1.Items.Add("Select product");
    using (SqlConnection con = createconnection()) {
        using (SqlCommand cmd = new SqlCommand ("SELECT Pname FROM product")) {
            using (SqlDataReader reader = cmd.ExecuteReader ()) {
                while (reader.Read ()) {
                    comboBox1.Items.Add (Convert.ToString (reader[0]));
                }
            }
        }
    }

Combobox AutoCompleteCustomSource C＃

1 个答案: