如何在用户控件中传递值

Question

Hi I have set a value in <%= MutlipleB %> and below is my Usercontrol calling in .aspx page. Let say <%= MutlipleB %> is in string format and i have set a value as "1" or "2" ie set dynamically from code side. I want to pass this value in user control. But it is passing value as <%= MutlipleB %> not "1" or "2". How could I pass my proper value?

<eu:EASIUp ID="myeasiup" runat="server" Quantity="-1" CanBeZero="false" NameID='<%= MutlipleB %>'></eu:EASIUp>

or Tried passing value as

<%# MutlipleB %> / <%= this.MutlipleB %> / <%# this.MutlipleB %>//Still not working

User control code

private string _nameID="0";
public string NameID
{
    get
    {
        return _nameID.ToString();
    }
    set { _nameID = value; }
}

Set value in <%= MutlipleB %> as below in aspx.cs code

private string _multipleB = "0";
public string MutlipleB
{
    get { return _multipleB; }
    set { _multipleB = value; }
}

how can I retrive value on user control side

The main reason to pass this value is on UserControl we are generating dynamic control and the id of this control should be generated related to the value im passing

Answer 1

Give your User Control a public property.

public partial class myCustomControl : System.Web.UI.UserControl
{
    public string NameID { get; set; }
}

And you can then set or get the value from the aspx page code behind.

protected void Page_Load(object sender, EventArgs e)
{
    myeasiup.NameID = "myString";
}

Answer 2

Open your user control's code behind page ( FILENAME.ascx.cs ). There you add below property.

public string Value { get; set; }

So, overall your code page be like:

namespace YOUR.NAMESPACE
{
    public partial class CLASS_NAME : UserControl
    {
        public string Value { get; set; }

        ... // REST OF CODE

    }
}

You can simply pass data to your code behind like below in where you are using user control:

<TAG_PREFIX:CLASS_NAME runat="server" Value="YOUR_DATA" ID="SomeId"/>

Or from the code behind like below:

SomeId.Value = "YOUR_DATA";

Hope this helps.