0

我在文本框上使用这个简单的功能时遇到问题。我有一个带有文本框的 winforms 应用程序，设置为像这样自动完成：

if (rbSerialNumSearch.Checked)
{
       txtSerialNum.Enabled = true;
       AutoCompleteStringCollection data = new AutoCompleteStringCollection();

       //Test data
       data.Add("555-777-333");
       data.Add("222-333-444");
       data.Add("111-222-333");

       txtSerialNum.AutoCompleteCustomSource = data;

       txtSerialNum.AutoCompleteMode = AutoCompleteMode.Suggest;

       txtSerialNum.AutoCompleteSource = AutoCompleteSource.CustomSource;
}

但它不起作用。我在文本框中输入时什么都没有出现？如果 ii 直接将字符串指定给文本框集合属性（在设计模式下），它可以正常工作，但是当我尝试以编程方式添加字符串时，什么也没有发生？

提前致谢..

表格的完整代码在这里：

namespace GUI
{
    public partial class UpdateEquipmentForm : Form
    {
        EquipmentManager em;
        ProductManager pm;
        CategoryManager cm;

        public UpdateEquipmentForm()
        {
            InitializeComponent();
            em = new EquipmentManager();
            pm = new ProductManager();
            cm = new CategoryManager();
        }

        private void btnSearch_Click(object sender, EventArgs e)
        {
            if (rbCategorySearch.Checked)
            {
                List<Equipment> equipments = em.GetAllEquipmentInStock().Where(eq => eq.Product.Category_Id == (int)cbChooseCategory.SelectedValue).ToList();

                var resultset = (from eq in equipments
                                 select new { eq.Product.ProductNameNum, eq.Id, eq.SerialNumber, eq.InvoiceNumber, eq.CreatedDate, eq.ExpiryDate, eq.FirstUseDate }).ToList();

                dgvResult.DataSource = resultset;
            }
            if (rbProductsSearch.Checked)
            {
                List<Equipment> equipments = em.GetAllEquipmentInStock().Where(eq => eq.Product.Id == (int)cbChooseType.SelectedValue).ToList();

                var resultset = (from eq in equipments
                                 select new { eq.Product.ProductNameNum, eq.Id, eq.SerialNumber, eq.InvoiceNumber, eq.CreatedDate, eq.ExpiryDate, eq.FirstUseDate }).ToList();

                dgvResult.DataSource = resultset;
            }
            if (rbSerialNumSearch.Checked)
            {
                List<Equipment> equipments = em.GetAllEquipmentInStock();

                var resultset = (from eq in equipments
                                 where eq.SerialNumber.Contains(txtSearchEquipment.Text)
                                 select new { eq.Product.ProductNameNum, eq.Id, eq.SerialNumber, eq.InvoiceNumber, eq.CreatedDate, eq.ExpiryDate, eq.FirstUseDate }).ToList();

                dgvResult.DataSource = resultset;
            }
        }

        private void rbCategorySearch_CheckedChanged(object sender, EventArgs e)
        {
            if (rbCategorySearch.Checked)
            {
                cbChooseCategory.Enabled = true;
                cbChooseCategory.DataSource = cm.GetAllActiveCategories();
                cbChooseCategory.DisplayMember = "Name";
                cbChooseCategory.ValueMember = "Id";
            }
            else
            {
                cbChooseCategory.Enabled = false;
            }
        }

        private void rbProductsSearch_CheckedChanged(object sender, EventArgs e)
        {
            if (rbProductsSearch.Checked)
            {
                cbChooseType.Enabled = true;
                cbChooseType.DataSource = pm.GetAllActiveProducts();
                cbChooseType.DisplayMember = "ProductNameNum";
                cbChooseType.ValueMember = "Id";
            }
            else
            {
                cbChooseType.Enabled = false;
            }
        }

        private void rbSerialNumSearch_CheckedChanged(object sender, EventArgs e)
        {
            if (rbSerialNumSearch.Checked)
            {
                txtSerialNum.Enabled = true;
                AutoCompleteStringCollection data = new AutoCompleteStringCollection();

                data.Add("555-777-333");
                data.Add("222-333-444");
                data.Add("111-222-333");

                txtSerialNum.AutoCompleteCustomSource = data;

                txtSerialNum.AutoCompleteMode = AutoCompleteMode.Suggest;

                txtSerialNum.AutoCompleteSource = AutoCompleteSource.CustomSource;
            }
            else
            {
                txtSerialNum.Enabled = false;
            }
        }
    }
}
4

2 回答 2

1

发现问题了。。我真傻。我引用了错误的文本框 :-( 我应该引用的是 txtSearchSerial 而不是 txtSerialNum。Doh ！

感谢你们的努力……谢谢。

于 2013-06-03T08:37:43.010 回答
0

您可以将断点设置为

     txtSerialNum.Enabled = true;

我认为这个应用程序永远不会遇到这个块。

或者在这段代码之后，你重新设置了txtSerialNum的绑定。

于 2013-06-03T08:21:28.427 回答