C# Set and get Value from input text in .aspx

Question

I think my problem is quite easy, but I find no solution:

My Question: If I set a field by C#, I modify it in the browser, the value will still be the same.

Example

<input type="text" id="IdText" runat="server" />

Set it with c# (load data into the form, with page.aspx?id=2, get data from DB and set itz to input fields)

IdText.Value = "Example";

Modify it in the browser, I insert "MyExample", and click a button to update the DB And if I will request the Value with c# it's still the same.

string text = IdText.Value;

Here the Value is "Example", and not "MyExample".

Do I have to add some more code?

Thanks for your help.

Is there any reason for not using ASP.NET controls like TextBox? — Tim Schmelter
– Tim Schmelter, Commented Aug 26, 2014 at 8:44
Wrap your pageLoad code inside if(!Page.IsPostback) { // your code } block to avoid this. — Zo Has
– Zo Has, Commented Aug 26, 2014 at 8:48

Tim Schmelter · Accepted Answer · 2014-08-26 08:58:14Z

2

As mentioned by Damien in the comment, you should wrap the code block that sets the Text-property to the value from DB in a !IsPostBack-check. Otherwise you're overwriting the changed value with the old from DB since Page_Load is executed before the button-click event-handler.

For example:

protected void Page_Load(OBject sender, EventArgs e)
{
    if(!IsPostBack)
    {
        IdText.Value = "Example";
    }
}

I would also use ASP.NET-controls if i use ASP.NET, so a TextBox instead of a html-input.

answered Aug 26, 2014 at 8:58

Tim Schmelter

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Comments

Mike · Accepted Answer · 2014-08-26 10:13:40Z

0

Thanks a lot. I knew the solution is easy.

As I'm using boostrap, I think it is quiet hard to combine bootstrap with the asp.net controls. But you are right - I could use <asp:textbox> insted of <input type="text" />

Thanks Mike

answered Aug 26, 2014 at 10:13

Mike

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