Welcome to the Session State demo video and in this video I'm going to show you a very simple example of using a Session State Variable to pass information from one page to another. We do this all the time on the web and you can do it with Session Information very easily. I've created a very simple, just a basic website, I gave it the name Session State Example and there's my Default ASPX page right here. Now to make this work, I'm going to add a second page, so I'm going to right-click on the Project Name, Add a New Item, tell it, it's a web form. I want to tell it to select the Master Page so that I will have my Content Tags in there, we'll talk about those later if you haven't already heard about them in the course at this point. I'm going to leave it as Default 2, that's the page we're going to pass our Session Variable Value to and notice we tell it to use the Site Masters, the only one we have and that creates a Default 2 and if we look at it in Design, we see it looks very similar to the Default 1 in the Design. Okay. Now here's what I really want to do. In the Default 1, I want to add a couple of things. I want to add a button, I want to add a text box above the button and then under the button, I want to add a, an, an Anchor Tag, an H Reference out to the Default 2 page. But let me show you the easy way to add that A Tag. I'm going to go to the Source and right here where it's located, is where I want to put in my A Tag and I'm going to use a Snippet to do. Notice I Open it, type A and then just Tab twice and there's my information. I want my underscore Hyperlink to say Next and right here to be able to choose the page, I'll just take out the quotes, put my first quote in, right here, trust me on this, if I hit the right thing and notice it will ask me and I can tell it Default 2. Alright. And there it is and then I have now lost, okay, there we go. So now with a little bit of hacking, I finally got it right? And so there's my A Tag and that's what's going to be the next. Let me move the P Tag down so you can see it a little easier. Alright. If we run that again, real quick, let's see what we're looking like here with our Default okay? And notice when we come up, we are on our Default page here, here's our Next and this will take us to the Default 2 page. Okay. Pretty straightforward. Now what I want to have happen here is, on this Default page, if I click, if I type something in this text box, I want it to be in a text box, I'm going to click the button to load it into the Session Variable, click Next Hyperlink, jump over to Default 2 but I want to see that value in a text box here. So let's give ourselves some space, we'll put a text box on 2 and what I want to do is, name the text box over here on 2 TXT Name 2 because it's on the Default 2 page and let's go back to the Default ASPX page, I hope you can follow all this jumping around here and on the ID here on this text box. TXT Name. Okay. So we got TXT Name here, TXT Name 2 on the other one. So now all we have to do is write our Session code and what we're going to have happen here is, when we click on the button on Default page we want to load whatever is in our text box into our Session Variable. Okay. Well the first thing I need to do before I start writing code down there, is of a String Type, I'm going to create Session String Variable and so on this Session Object. Alright. And then I'm just going to name it, notice the overload here. I can put a String name, the Session Value by name and I'm just going to call it Session, make sure I spell it right, String and I will close that out. Now what that is telling me is that this Session String Value. Okay. Is going to be set equal to TXT Name, the TXT Property. So when I click the button, whatever's in the TXT Name Text Field is going to be loaded into this Session String Variable. Now when I get to Default 2 ASPX I want to go to the Code Behind here and I'll just grab that here and on the Page Load, I want to take that Session String Variable and load it into my text box there. So I'll say this and I'll call TXT Name 2.TXT and I will set it equal to. Now I have to cast this to a string here for it to behave for us. And I'm going to call this Session, open our brackets, Session String and did I spell it. Right. If I didn't it won't work, because it will see two different Variables and now we should have it. So you'll just have to go through that, I apologize for going so fast, but I want to get all this in one video so that it's coherent. Okay. So now when I run this, it should bring up my Default page, we'll run it without debugging and you can see here, oop it carried me to Default 2. So let me go back, right-click on Default, set that as the Start page, a little trick for you there, in case you didn't know it. If you're in this course, you probably knew that one and so now I'm just going to put Mark Long, click the button, if you remember the code, that puts that into that Session String Variable, then when I hit Next, I go to the next page and notice it has carried that over there. Now what's real interesting is, let me move this over and cover just half the page, then I'm going to go into Tools, go into Options and come down here to Web Browser, do Internet Explorer Options and tell it on this to set my Internet Explorer to be the Default now. Okay. And I'll OK that. And so now I'm just going to run this again, run without debugging and it's going to open it in Internet Explorer. Okay. I'll tell it to ask me later about that. Now I'll just put Bob in here, load Bob in and hit Next and notice it has carried Bob over there. If I jump down here and put these side by side, you'll notice that I have two sessions going here and so when I open the new browser, it picked up a new Session and that Session Variable's holding something different. So anyway, a lot of stuff going on there, I'm just a little over on time here, so go back through this one a time or two, make sure it makes sense to you. Very, very easy to use that Session Object that's loaded automatically and pass values around page to page.
|Course:||Designing and Developing ASP.NET 4 Web Apps (Exam 70-519)|
|Duration:||8.5 hrs / 108 lessons|
|Captions:||Available on CD and Online University|
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