session value and using that

[netsooz Amir Hamidi]

hi people I've created this session in global.asax part of my project in this way:

Session["news_id"]= null;

I've used a datalist to load some news titles from database and when you click on that title (Which is a link button) there opens a popup window and reads the desired news. It the click event of mentioned link button I've told that:

Session["news_id"]= (int)(dataList1.DataKeys[dataList1.SelectedIndex]);

(I guess that the snippet above is problmatic) Then in the form_load of that popup page after creating the sqlconnection stuff i've made the below commandtext: "select text from news where id='"+Session["news_id"]+"'"; in which text is a field that news is stored and news is the name of my table. What I get as an error is that sometimes on the click event of my link button says : Object not set to its refrence or something and sometimes it says that index was out of range! Plase help me with you solutions. Thanks alot

Proper Prepration Prevents Poor Performance! h

[Gaurav K Singh]

You are right, i also think the problem with Session["news_id"]= (int)(dataList1.DataKeys[dataList1.SelectedIndex]); First, dataList1.SelectedIndex is start with 0 and i think news_id is start with 1 (Its my guess). This index of control never be similar with your id. you can use response.write to check this problem... You can also use the similar type of things.... BorderStyle="None" BorderWidth="1px" CellPadding="3" DataKeyField="id" DataMember="DefaultView" DataSourceID="SqlDataSource1" GridLines="Horizontal" UseAccessibleHeader="True" Width="100px"> []]>](<%#DataBinder.Eval(Container.DataItem, ) ]]> SelectCommand="SELECT [id], [title], [name] FROM [table]"> Here you pass news id as query string.

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[netsooz Amir Hamidi]

As a matter of fact the result of return is always -1 ! I don't know why. by the way Do you think I can try the title instead of id? I mean I use the string of title to pass to session and ... by the way, since I am kind of new in asp.net please inlight me with the ways you've provided. I have no idea what I should do with them thanks

Proper Prepration Prevents Poor Performance! h

[Gaurav K Singh]

You can pass anything instead of id which is unique (because every link open a unique page.). you can use javascript window.open() function also to open in pop up. In pop up page you receive the id/title value and based on that value you can show the content in the pop up.

The miracle is this--the more we share, the more we have.