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Database is not uploading after adding Session in ASP.NET

In my website project, I made a register and login form, then I connected it to a database. The insertion was working. Now I added session to store the data of registration, but no data is getting inserted. In addition to this, I am not getting any change in codes too, where I made change if there is a session. Once it said that localhost refused to connect, but now the browser is not giving any error like that. Can anyone please help me figure out where the problem in my code is?
My C# code is:
protected void userRegister(object sender, EventArgs e)
{
string constr = ConfigurationManager.ConnectionStrings["Khulna_website"].ConnectionString;
string encoded_pass = encrypt_pass(Regi_Password.Text);
using(SqlConnection connection = new SqlConnection(constr))
{
string insertQuery = "insert into dbo.users(user_f_name,user_l_name,user_password,user_email,user_age, user_gender) values (#First_Name, #Last_Name, #Regi_Password, #Regi_Email, #Age, #Gender);";
SqlCommand com = new SqlCommand(insertQuery, connection);
connection.Open();
com.Parameters.AddWithValue("#First_Name", First_Name.Text);
com.Parameters.AddWithValue("#Last_Name", Last_Name.Text);
com.Parameters.AddWithValue("#Regi_Password", encoded_pass);
com.Parameters.AddWithValue("#Regi_Email", Regi_Email.Text);
com.Parameters.AddWithValue("#Age", Age.Text);
com.Parameters.AddWithValue("#Gender", Gender.SelectedValue);
try
{
com.ExecuteNonQuery();
com.CommandText = "Select * from dbo.users where email = " + Regi_Email.Text;
SqlDataAdapter da = new SqlDataAdapter(com);
DataTable dt = new DataTable();
da.Fill(dt);
Session["User"]=dt.Rows[0]["user_f_name"];
Response.Redirect("default.aspx");
loginlabel.Text="Welcome, "+Session["User"];
connection.Close();
}
catch
{
Label1.Text = "Registration Error!";
}
}
The HTML is:
<form runat="server" method="post">
<div class="header">
<img id="icon" src="Images/logo.png">
<form>
<input type="text" id="search" placeholder="Search for people, place, locations">
<input type="submit" id="search_button" value="">
</form>
<span id= "login" runat="server" onclick="login();"><asp:Label ID="loginlabel" Text="" runat="server"></asp:Label></span>
</div>
<div>
<asp:ContentPlaceHolder id="Body" runat="server">
</asp:ContentPlaceHolder>
</div>
<div id="Sign_Up_Form" style="display: none">
<form class="modal-content animate">
<div class="input">
<div>
<div>Name</div>
<asp:TextBox CssClass="signUp_input" ID="First_Name" runat="server" placeholder="First Name" style="height: 20px; padding-left: 1px;"></asp:TextBox>
<asp:TextBox CssClass="signUp_input" ID="Last_Name" runat="server" placeholder="Last Name" style="height: 20px; padding-left: 1px;"></asp:TextBox>
</div>
<div>
<div>Email</div>
<asp:TextBox CssClass="signUp_input" ID="Regi_Email" runat="server" placeholder="Your email here" style="height: 20px; width:90%; padding-left: 1px;"></asp:TextBox>
</div>
<div>
<div>Password</div>
<asp:TextBox CssClass="signUp_input" ID="Regi_Password" type="password" runat="server" placeholder="**********" style="height: 20px; width: 90%; padding-left: 1px;"></asp:TextBox>
</div>
<div>
<div>Confirm Password</div>
<asp:TextBox CssClass="signUp_input" ID="Confirm_Regi_Password" type="password" runat="server" placeholder="**********" style="height: 20px; width: 90%; padding-left: 1px;"></asp:TextBox>
</div>
<div>
<div>Birth Date</div>
<asp:TextBox CssClass="signUp_input" ID="Age" type="number" runat="server" placeholder="dd/mm/yyyy" style="height: 20px; width: 90%; padding-left: 1px;"></asp:TextBox>
</div>
<div>
<div>Gender</div>
<asp:RadioButtonList CssClass="radio" ID="Gender" runat="server">
<asp:ListItem CssClass="radio" Value="1">Male</asp:ListItem>
<asp:ListItem CssClass="radio" Value="2">Female</asp:ListItem>
<asp:ListItem CssClass="radio" Value="3">Other</asp:ListItem>
</asp:RadioButtonList>
</br>
</div>
</div>
<asp:Button ID="Register_Button" runat="server" value="Join" OnClick="userRegister" CssClass="button_join" Text="Join" />
<asp:Label ID="Label1" CssClass="label" runat="server" Text=""></asp:Label>
</form>

I think the problem here is you are using the same SqlCommand that you have with the "insert" command to fill the data adapter (you don't change the command).
You can solve this three ways:
First one: Change the SqlCommand to a SELECT clause with the information you need to fill your session just before creating the DataAdapter.
Second one: Just fill your session with the form data like:
Session["user"] = Regi_Email.Text;
Session["user_name"] = First_Name.Text;
Of course you should handle the errors if the insert fails.
Third One: Use stored procedure so you can insert and fill the data adapter with a select in the same query.
IMHO i would prefer option 2 or 3.
Also i think you have to consider to have a better exception handling (Not all the errors that can actually happen are because the email is already in use) and you should consider using the "using" statement (https://learn.microsoft.com/en-us/dotnet/csharp/language-reference/keywords/using-statement) for disposing/closing the objects (SqlCommand and SqlDataAdapter).
Hope this helps.

show asp.net progress bar for multiple operations

I need to show asp.net progress bar for three operations on webpage. First,when file upload the progress bar should show 33 % and message 'file upload started'. Once uploaded it should show message 'validating file data' and progress 66%. At third round, it should show 'automatching data' with 99%.
I have three methods that will be called one by one. I googled a lot but couldn't find a solution for this type of problem. Can someone please help?

If you want to show progress bar you need to introduce some java script or jquery code. I am sharing a sample code you can take idea from here
<form id="form1" runat="server">
<div style="text-align: left">
<asp:FileUpload ID="FileUpload1" runat="server" /> <br />
<br />
<asp:Button ID="Button1" runat="server" Text="Upload" OnClientClick="return ProgressBar()" OnClick="Button1_Click" /><br />
<br />
<div id="divUpload" style="display: none">
<div style="width: 300pt; text-align: center;">Uploading...</div>
<div style="width: 300pt; height: 20px; border: solid 1pt gray">
<div id="divProgress" runat="server" style="width: 1pt; height: 20px; background-color: Gray; display: none">
</div>
</div>
<div style="width: 300pt; text-align: center;">
<asp:Label ID="lblPercentage" runat="server" Text="Label"></asp:Label>
</div>
</div>
</div>
<br />
<asp:Label ID="Label1" runat="server" ForeColor="Red" Text=""></asp:Label>
</form>
<script language="javascript" type="text/javascript">
var size = 2;
var id = 0;
function ProgressBar() {
if (document.getElementById('<%=FileUpload1.ClientID %>').value != "") {
document.getElementById("divProgress").style.display = "block";
document.getElementById("divUpload").style.display = "block";
id = setInterval("progress()", 20);
return true;
}
else {
alert("Select a file to upload");
return false;
}
}
function progress() {
size = size + 1;
if (size > 299) {
clearTimeout(id);
}
document.getElementById("divProgress").style.width = size + "pt";
document.getElementById("<%=lblPercentage.ClientID %>").
firstChild.data = parseInt(size / 3) + "%";
}
</script>
protected void Button1_Click(object sender, EventArgs e)
{
// Do code here to saving a file from fileupload control
//FileUpload1.PostedFile.SaveAs("path");
System.Threading.Thread.Sleep(8000);
Label1.Text = "Upload successfull!";
}
Here is the source url - http://www.codeproject.com/Articles/26668/Showing-progress-bar-while-uploading-a-file-in-an

Not able to use javascript variable in code behind in C#

Guys I am using a jquery price range slider for getting Price range from user.But the problem is that the Price range selected by user on slider I have to use that in code behind.My code is like this:
My java script:
<script type="text/javascript">
//adding load class to body and hide page
document.documentElement.className += 'loadstate';
</script>
<script type ="text/javascript" >
var str1= document.getElementById("amt3").value;
var str2= document.getElementById("amt4").value;
document.getElementById("hf1").value = str1;
document.getElementById("hf2").value = str2;
</script>
</head>
My Html code is like this:
<asp:HiddenField ID="hf1" runat="server" />
<asp:HiddenField ID="hf2" runat="server" />
<div class="form-row row-fluid">
<div class="span12">
<div class="row-fluid">
<label class="form-label span4" for="slider">
Range slider</label>
<div class="span8">
<asp:UpdatePanel ID="UpdatePanel2" runat="server">
<ContentTemplate >
<asp:HiddenField ID="HiddenField1" runat="server" />
<div id="slider-range" class="slider" >
</div>
<input type="text" id="amount1" style="border: 0; color: #ED7A53; font-weight: bold;
box-shadow: none;" />
<input type="text" id="amt3" style="border: 0; color: #ED7A53; font-weight: bold;
box-shadow: none;" />
<input type="text" id="amt4" name="amt4" style="border: 0; color: #ED7A53;
font-weight: bold; box-shadow: none;" />
</ContentTemplate>
</asp:UpdatePanel>
</div>
</div>
</div>
and My code Behind is like this:
protected void lnkFilter_Click1(object sender, EventArgs e)
{
string str= hf1.Value;
if (WebHelper.Cast(amt2.Value, 0) != 0)
{
Fill();
}
}
But the Problem is hf1 (hidden field) is getting empty string value.Please help me in this and suggest me a solution how to use selected range on jquery slider in code behind file.

You should move your hidden values inside your Update panel as they will not get posted back to the server on a partial update.

Facing Issue with using System.Web.Routing

I am using slideshow on my website. Its works fine when i disable the web routing.
When i enable the Web Routing on aspx pages, Slideshow working stops. I guess javascript not working after enabling Web routing.
protected void Application_Start(object sender, EventArgs e)
{
RegisterRoutes(RouteTable.Routes);
}
public static void RegisterRoutes(RouteCollection routes)
{
routes.MapPageRoute("CategoryRoute", "Category/{sCatId}", "~/Category.aspx",true);
routes.MapPageRoute("SubCategoryRoute", "SubCategory/{catid}", "~/SubCategory.aspx");
}
Routing works fine when i am using it, but working slideshow stops.
Below i am pasting slideshow code.
<div id="slider">
<div id="items">
<div>
<div style="width: 100%; margin: 0 0; height: 250px">
<img src="http://www.yepme.com/slider/1.jpg" alt="" width="100%" height="100%" />
</div>
</div>
<div>
<div style="width: 100%; margin: 0 0; height: 250px">
<img src="http://www.yepme.com/slider/2.jpg" alt="" width="100%" height="100%" />
</div>
</div>
<div>
<div style="width: 100%; margin: 0 0; height: 250px;">
<img src="http://www.yepme.com/slider/3.jpg" alt="" width="100%" height="100%" />
</div>
</div>
<div>
<div style="width: 100%; margin: 0 0; height: 250px;">
<img src="http://www.yepme.com/slider/4.jpg" alt="" width="100%" height="100%" />
</div>
</div>
</div>
</div>
Don't know what the problem is ? how it can be resolved.
I also used
<img src= '<%= Page.ResolveUrl("http://www.yepme.com/slider/4.jpg") %>' alt="" width="100%" height="100%" />
But it didn't work for me. Guys Help me !

Are your jpeg files delivered through a custom handler ?
If so, did you try adding some specific ignore for your slideshow ? Something like :
public static void RegisterRoutes(RouteCollection routes)
{
routes.Ignore("{*sliderimages}", new { sliderimages =#"slider/\d+\.jpg"});
routes.MapPageRoute("CategoryRoute", "Category/{sCatId}", "~/Category.aspx",true);
routes.MapPageRoute("SubCategoryRoute", "SubCategory/{catid}", "~/SubCategory.aspx");
}

embed string in the html

Asp.net c#
I am using the below code..
<%String h = "hello";%>
<!-- "wall_com_insert.aspx?Tid=" + Application.Get("Tid");-->
<div id="content_sr_comment" style="height: auto"> <asp:Label ID="Label8"
runat="server" Text="<%=h%>" ></asp:Label>
</div>
But I am getting the output..
output displayed on the label: "<%=h%>"
I guess the syntax is not correct.. can I get help

You can't place a server command inside a server tag. Try this:
<div id="content_sr_comment" style="height: auto"> <%= h %></div>
Or
<script runat="server" language="C#">
void Page_Load(object sender, EventArgs e)
{
String h = "hello";
Label8.Text = h;
}
</script>
<div id="content_sr_comment" style="height: auto">
<asp:Label ID="Label8" runat="server"></asp:Label>
</div>

This should work:
<script runat="server" language="C#">
private string h = "hello";
</script>
<!-- "wall_com_insert.aspx?Tid=" + Application.Get("Tid");-->
<div id="content_sr_comment" style="height: auto"> <asp:Label ID="Label8"
runat="server"><%=h%></asp:Label>
</div>

Another approach that I find useful, especially if you want to write out a value in multiple places in your html is to create a function in your code behind like this:
protected string SayHello()
{
return "Hello";
}
You can then use it all over your html:
<div id="content_sr_comment" style="height: auto">
<%=SayHello() %>
</div>