session variable from a SQL query in _layout page[Answered] RSS

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  Baze72

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  session variable from a SQL query in _layout page

  Sep 09, 2019 08:23 PM|Baze72|LINK

  Is it possible to set a session variable from a sql query (select top1 support from table) and set it as a session variable to display on a layout page?

  Thanks,

  EB

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  mgebhard

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  Re: session variable from a SQL query in _layout page

  Sep 09, 2019 08:25 PM|mgebhard|LINK

  Baze72

  Is it possible to set a session variable from a sql query (select top1 support from table) and set it as a session variable to display on a layout page?

  If course.  Please share your code if you need support querying a database and setting Session.

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  Baze72

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  Re: session variable from a SQL query in _layout page

  Sep 09, 2019 09:31 PM|Baze72|LINK

  Well I am not sure really how to even start - but here is what I am maybe starting with. In my controller: I want the SupportCode to be a session variable that I can display on the _layout view.  Let me know if you need anything else!!

  public ActionResult  I()
          {
              List<IModel> icore = new List<IModel>();
              string query = "SELECT ID, SupportCode FROM I";
              string constr = ConfigurationManager.ConnectionStrings["PBTConn"].ConnectionString;
              using (SqlConnection con = new SqlConnection(constr))
              {
                  using (SqlCommand cmd = new SqlCommand(query))
                  {
                      cmd.Connection = con;
                      con.Open();
                      using (SqlDataReader sdr = cmd.ExecuteReader())
                      {
                          while (sdr.Read())
                          {
                              icore.Add(new IModel
                              {
                                  SupportCode = Convert.ToInt32(sdr["SupportCode"]),
  
                              });
                              
                          }
                      }
                      con.Close();
                      return View(icore);
                  }
              }
          }

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  Yongqing Yu

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  Re: session variable from a SQL query in _layout page

  Sep 10, 2019 05:15 AM|Yongqing Yu|LINK

  Hi Baze,

  According to your description, I found that there will be many SupportCodes in your code.

  I want to ask you, do you want to store these SupportCodes in the same session? Or does it show only one SupportCode to the _layout page?

  If you want to display a session variable in _layout view, here has a simple way to achieve what you want , you can refer to this link :

  https://stackoverflow.com/a/37281092

  Best Regards,

  YongQing.

  MSDN Community Support
  
  Please remember to click "Mark as Answer" the responses that resolved your issue.
  
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  mgebhard

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  Re: session variable from a SQL query in _layout page

  Sep 10, 2019 10:15 AM|mgebhard|LINK

  The SQL returns every record from table I.  What are you trying to persist in Session?  Can you explain your design?

  Anyway, adding a value to Session is very simple.

  Session["MySessionItem"] = "This is a Test";

  Displaying Session in _layout using Razor is just as easy.

          @if(Session["MySessionItem"] != null)
          {
              <div>@Session["MySessionItem"]</div>
          }

  It is up to you to determine what SQL script you need to write to get the value(s) you want.

• • Reply
  Baze72

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  127 Posts

  Re: session variable from a SQL query in _layout page

  Sep 10, 2019 12:20 PM|Baze72|LINK

  My sql query wil ALWAY only return 1 result that is why I thought I could use a session variable. I am using another session variable just fine just not setting with a sql query.

• • Reply
  Yongqing Yu

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  1043 Posts

  Re: session variable from a SQL query in _layout page

  Sep 11, 2019 01:15 AM|Yongqing Yu|LINK

  Hi Baze,

  Baze72

  My sql query wil ALWAY only return 1 result that is why I thought I could use a session variable. I am using another session variable just fine just not setting with a sql query.

  If so, you can use session variable like this :

  public ActionResult  I()
          {
              List<IModel> icore = new List<IModel>();
              string query = "SELECT ID, SupportCode FROM I";
              string constr = ConfigurationManager.ConnectionStrings["PBTConn"].ConnectionString;
              using (SqlConnection con = new SqlConnection(constr))
              {
                  using (SqlCommand cmd = new SqlCommand(query))
                  {
                      cmd.Connection = con;
                      con.Open();
                      using (SqlDataReader sdr = cmd.ExecuteReader())
                      {
                          while (sdr.Read())
                          {
                              icore.Add(new IModel
                              {
                                  SupportCode = Convert.ToInt32(sdr["SupportCode"]),
                                  
                              });
                              Session["SupportCode"] = sdr["SupportCode"];
                          }
                      }
                      con.Close();
                      return View(icore);
                  }
              }
          }

  In you _layout view, you can use this session variable as provided in previous replies:

  <p>SupportCode is @Session["SupportCode"].ToString() </p>

  Best Regards,

  YongQing.

  MSDN Community Support
  
  Please remember to click "Mark as Answer" the responses that resolved your issue.
  
  If you have any compliments or complaints to MSDN Support, feel free to contact MSDNFSF@microsoft.com.