User1045460610 posted
Developed in Visual Studeio 2017 Enterprise, targeted to .net framework 4.6.1
I have a web site that runs on my test server. When I copy it to a subfolder of a web portal on the development server I get these errors:
1. Compiler Error Message: CS0103: The name 'DatabaseCheckIn' does not exist in the current context
2. Warning: CS1685: The predefined type 'System.Threading.Tasks.Task' is defined in multiple assemblies in the global alias; using definition from 'c:\Windows\Microsoft.NET\Framework64\v4.0.30319\mscorlib.dll'
For the first error DatabaseCheckIn (See scripts listed below). The page runs in Visual Studio Browse on the Interne web browser and the IE Express web browser. So, I think the problem is with the second error.
The second error looks like the web portal is using .net 4.
If I search for how to correct that error it looks like I should use -nostdlib
https://docs.microsoft.com/en-us/dotnet/csharp/language-reference/compiler-options/nostdlib-compiler-option
But this page states that "The Do not reference mscorlib.dll build property doesn't exist in Visual Studio 2017."
How can I get the page to run if it's referencing the wrong assembly?
DatabaseCheckIn error
It's declared in Database.cs
using System;
using System.Configuration;
using System.Web.Configuration;
//public class Database
public class DatabaseCheckIn
{
static public String ConnectionString
{
get
{ // get connection string with name database from web.config.
//return WebConfigurationManager.ConnectionStrings["ICS_NETConnectionString"].ConnectionString;
return WebConfigurationManager.ConnectionStrings["OnGroundsWebSiteConnectionString"].ConnectionString;
}
}
}
aspx.cs
using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.Data;
using System.Data.SqlClient;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.Services;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class updatecourses : System.Web.UI.Page
{
protected void Page_LoadComplete(object sender, EventArgs e)
{
//MessageBox.Show("You are in the Form.Shown event.");
{
SqlConnection con = new SqlConnection(DatabaseCheckIn.ConnectionString); <--Compiler Error Message: CS0103: The name 'DatabaseCheckIn' does not exist in the current context
...
error listing
Server Error in '/ICS' Application.
Compilation Error
Description: An error occurred during the compilation of a resource required to service this request. Please review the following specific error details and modify your source code appropriately.
Compiler Error Message: CS0103: The name 'DatabaseCheckIn' does not exist in the current context
Source Error:
Line 18: if (!Page.IsPostBack)
Line 19: {
Line 20: SqlConnection con = new SqlConnection(DatabaseCheckIn.ConnectionString);
Line 21: {
Line 22: //SqlDataAdapter da = new SqlDataAdapter("select * from courses order by RecordID", con);
Source File: c:\Program Files\Jenzabar\ICS.NET\Portal\StaticPages\WebForm.CheckIn\listcoursestoday.aspx.cs Line: 20
Compiler Warning Messages:
Warning: CS1685: The predefined type 'System.Threading.Tasks.Task' is defined in multiple assemblies in the global alias; using definition from 'c:\Windows\Microsoft.NET\Framework64\v4.0.30319\mscorlib.dll'
Source Error:
[No relevant source lines]
Warning: CS1685: The predefined type 'System.Threading.Tasks.Task' is defined in multiple assemblies in the global alias; using definition from 'c:\Windows\Microsoft.NET\Framework64\v4.0.30319\mscorlib.dll'
Source Error:
[No relevant source lines]
Show Detailed Compiler Output:
c:\windows\system32\inetsrv> "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" (excluded the rest it was very long)
Microsoft (R) Visual C# Compiler version 4.7.3062.0
for C# 5
Copyright (C) Microsoft Corporation. All rights reserved.
This compiler is provided as part of the Microsoft (R) .NET Framework, but only supports language versions up to C# 5, which is no longer the latest version. For compilers that support newer versions of the C# programming language, see http://go.microsoft.com/fwlink/?LinkID=533240
warning CS1685: The predefined type 'System.Threading.Tasks.Task' is defined in multiple assemblies in the global alias; using definition from 'c:\Windows\Microsoft.NET\Framework64\v4.0.30319\mscorlib.dll'
warning CS1685: The predefined type 'System.Threading.Tasks.Task' is defined in multiple assemblies in the global alias; using definition from 'c:\Windows\Microsoft.NET\Framework64\v4.0.30319\mscorlib.dll'
c:\Program Files\Jenzabar\ICS.NET\Portal\StaticPages\WebForm.CheckIn\listcoursestoday.aspx.cs(20,51): error CS0103: The name 'DatabaseCheckIn' does not exist in the current context
Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.7.3429.0
