Question

我在Angular2应用程序中有一个输入字段的指令。我想停止粘贴或 Ctrl + V 到该指令的主机，所以我使用了以下代码，代码运行正常。

@HostListener('paste', ['$event']) blockPaste(e: KeyboardEvent) {
  e.preventDefault();
}

我还想停止Drop事件到该主机。我该怎么办？

Answer 1

我猜到了。它正在发挥作用。

@HostListener('drop', ['$event']) blockDrop(e: MouseEvent) {
    e.preventDefault();
  }

Answer 2

protected void Page_Load(object sender, EventArgs e)
{
    String UserName = Utils.Session.Get(Constants.SessionObjects.UserName);

    if (!IsPostBack)
    {
        DataTable dt = this.GetData();

        Listview1.DataSource = dt;

        Listview1.DataBind();

    }
}

private DataTable GetData()
{
    string RetailLink = ConfigurationManager.ConnectionStrings["DefaultDB"].ConnectionString;
    using (SqlConnection con = new SqlConnection(RetailLink))
    {
        using (SqlCommand cmd = new SqlCommand("EXEC sp_mProduct_Sel_ByPrincipalRetailer#PWA " + UserName + ", " + PricipalID.ToInt32()))
        {
            using (SqlDataAdapter sda = new SqlDataAdapter())
            {
                cmd.Connection = con;
                sda.SelectCommand = cmd;
                using (DataTable dt = new DataTable())
                {
                    sda.Fill(dt);
                    return dt;
                }
            }
        }
    }
}


protected void btnProceedOrder_Click(object sender, EventArgs e)
{

    foreach (ListViewDataItem row in Listview1.Items)
    {

        TextBox txtQuantity = row.FindControl("txtQuantity") as TextBox;

        string Quantity = txtQuantity.Text.ToString(); //string Quantity keep getting "0", I need to get the value that user insert.


    }
}

我希望它可能会有所帮助。

如何在Angular2中停止Drop事件？

2 个答案: