Visual Studio WebPart to get the item being edited to replace List Edit Form

Question

I had created a web part in Visual Studio 2010 for Sharepoint 2010. I added all the fields, implemented cascading dropdowns, custom panel and bind the data using Sharepoint SPLists

            var collection = mysite.Lists;

            SPListItemCollection valList = mysite.Lists["MyValidationList"].Items;

            ddlCompanyName.DataSource = valList.GetDataTable();

            ddlCompanyName.DataTextField = "Title";

            ddlCompanyName.DataBind();

The problem is how to handle the submit buttons.

Like after i click the submit button i want to redirect to the lists page.

Similarly how can i create the edit form like how do i know which record is being modified

Can i use querystring..

Any help is appreciated.

Please note i am not using any third party library

Answer 1

to get the url its:

string url = SPContext.Current.Site.Url + "/" + mysite.Lists["MyValidationList"].RootFolder.Url;

add the above to the button url,

as an example im creating a button and adding the url to the button click event:

METHOD 1 within create child controls

string url = SPContext.Current.Site.Url + "/" + mysite.Lists["MyValidationList"].RootFolder.Url;

Button b = new Button();
b.PostBackUrl = url;
controls.add(b);

this method is assigning the url on the creation of the button.

METHOD 2

create a global varible to hold the url:

string url = null;

create your button within creatchildcontrols event:

        Button b = new Button();
        b.Click += new EventHandler(b_Click);
        url = SPContext.Current.Site.Url + "/" + mysite.Lists["MyValidationList"].RootFolder.Url;
        controls.add(b);

now we have created a button and a click event you want to populate the url you can do like so:

    private void b_Click(object sender, EventArgs e)
    {
        Button b = sender as Button;
        b.PostBackUrl = url;
    }

this method is assigning the url on the click event of the button.