How to store session into generics

Question

4.00/5 (1 vote)

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C#

protected void Btn_Next_Click(object sender, EventArgs e)
        {
            bool flag = false;
            pobj.InsertProblem();
            int problemid = pobj.Maxid();
            List<resourcedto> objResourceList = new List<resourcedto>();
            foreach (GridViewRow rw in GridView1.Rows)
            {
                CheckBox chk = (CheckBox)rw.FindControl("CheckBox1");
                TextBox txt = (TextBox)rw.FindControl("TxtProfit");
                if ((chk.Checked == true) && (txt.Text != ""))
                {
                    ResourceDTO objResourceDTO = new ResourceDTO();
                    objResourceDTO.ItemName = chk.Text;
                    objResourceDTO.Profit = Convert.ToInt32(txt.Text);
                    objResourceDTO.ItemId = Convert.ToInt32(GridView1.DataKeys[rw.RowIndex].Value);
                    objResourceDTO.ProblemId = problemid;
                    objResourceList.Add(objResourceDTO);
                    //string sql_prblm = string.Format("insert into ProblemProduct(ProblemId,ItemId,Profit)values('{0}','{1}','{2}')", problemid, itemid, profit);
                    //pobj.InsertProblemproduct(sql_prblm);    
                    flag = true;
                }
                Session["ResourceDTOList"] = objResourceList;
            }
            if (flag)
            {
                Response.Redirect("ProblemResource.aspx");
            }
            else
            {
                ClientScript.RegisterStartupScript(this.GetType(), "key", "alert('Select something first')", true);
            }
        }

I have used generics on click of next button it should move to problem resource page in that page i have to assign that session to list. please help out

Posted 24-Aug-12 22:39pm

Lakshmimsridhar

Updated 24-Aug-12 22:44pm

André Kraak

v2

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2 solutions

Solution 1

Not sure I would have stored it like this, but, I think you're learning how the session works ( I think I pointed you in that direction ). Did you read articles or just copy the one bit of code I gave you ?

In the other page,

List<resourcedto>objResourceList = (List<resourcedto>)Session["ResourceDTOList"];

There's much that's wrong with this code, but it will work, and it seems you're taking baby steps for now, so I don't want to overload you with detail. I assume no-one is using this code, I can't imagine someone who doesn't know what the session is, would be paid to write web code.

Posted 24-Aug-12 23:12pm

Christian Graus

v2

Comments

Lakshmimsridhar 25-Aug-12 5:31am

i knew that how to store it in session. but using genrics i dont know. what you had given above its not working. i tried it before itself then posted that. Anyways thanks for your reply.

Christian Graus 25-Aug-12 5:32am

You need to define 'not working'. If you put a value in to the session, it will come out. My code is correct. Your code has other issues. Use the debugger to work out what is going on, put breakpoints in EVERY point that uses that session key and see what happens.

Lakshmimsridhar 25-Aug-12 5:40am

i am getting error like resourcedto is a type but used like a variable

Christian Graus 25-Aug-12 5:43am

IT means what it says. resourcedto is a class type, but your syntax makes it look like a variable. See, if you told us you were getting an error and what it was, we could help better. Post the code, or if it's the code above, tell us what line has the error

Lakshmimsridhar 25-Aug-12 6:11am

Okay tell me in what way i can retrive that session values in next page

Christian Graus 25-Aug-12 7:33am

I told you. I also told you to debug the pages to work out what is going wrong. Do you know how to do that ? Either way, you need to post the code that gives you this error, I can't debug it via ESP.

Lakshmimsridhar 25-Aug-12 8:00am

i got stucked i didnt write any code thats what i am asking how to get that session values in next page.

Christian Graus 25-Aug-12 8:03am

I gave you the answer and you said you got an error. How can you get an error without writing code ? Did the code I gave you, give the error ? It shouldn't do. Is the resourceto class visible in the other page ? Did you consider reading an article on how the session works, instead of trying to copy my code blindly ?

Lakshmimsridhar 25-Aug-12 8:46am

private void Allocate()
{
List<resourcedto> objresourcelist = (List<resourcedto>Session["ResourceDTOList"];
}
this only i wrote

Christian Graus 25-Aug-12 8:55am

Exactly like that ? Not the code that I wrote ? You are missing a ). Is the resourcedto class visible ? Does the line "resourcedto test;" compile ?

Lakshmimsridhar 25-Aug-12 8:56am

i am sorry i put that bracket while copying i didnt copy properly...

Christian Graus 25-Aug-12 8:58am

If the code is the same as my code, did you do the other test I asked about ? Can it see the class ? Perhaps you need to try storing a simpler type, like a string first and then build from there to work out which step is breaking.

Lakshmimsridhar 27-Aug-12 3:06am

I got solution. i posted it.

Kuthuparakkal 27-Aug-12 3:16am

my 5+

Lakshmimsridhar 21-Sep-12 1:17am

kuthuparakkal thank you so much:)

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Lakshmimsridhar · Accepted Answer · 2012-08-26T21:05:00

XML

private void Allocate()
      {

          List<ResourceDTO> objResourceList = new List<ResourceDTO>();

          objResourceList = (List<ResourceDTO>)Session["ResourceDTOList"];

          List<ProblemDto> objproblemlist = new List<ProblemDto>();
          objproblemlist = (List<ProblemDto>)Session["ProblemDtoList"];

          TableHeaderRow hrow = new TableHeaderRow();
          TableHeaderCell hcell1 = new TableHeaderCell();
          hcell1.Text = "&nbsp;";
          hrow.Controls.Add(hcell1);
          foreach (ResourceDTO item in objResourceList)
          {
              TableHeaderCell hcell2 = new TableHeaderCell();
              hcell2.Text = item.ItemName;
              hrow.Controls.Add(hcell2);
          }
          Table1.Controls.Add(hrow);

          foreach (ProblemDto problem in objproblemlist)
          {
              TableHeaderRow hrow1 = new TableHeaderRow();
              TableHeaderCell hcell3 = new TableHeaderCell();
              hcell3.Text = problem.Resource_Name;
              hrow1.Controls.Add(hcell3);
              foreach (ResourceDTO resource in objResourceList)
              {
                  TableHeaderCell hcell4 = new TableHeaderCell();
                  TextBox txtProfit = new TextBox();
                  txtProfit.Width = 60;
                  hcell4.Controls.Add(txtProfit);
                  hrow1.Controls.Add(hcell4);
              }
              Table1.Controls.Add(hrow1);
          }