Connection string error

Question

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I given in webconfig like this

XML

<connectionStrings>
    <add name="sqlconnection" connectionString="Data Source=VANARAJ\SQLEXPRESS;Initial Catalog=Practice; Integrated Security=True;User Instance=True" providerName="System.Data.SqlClient"/>

  </connectionStrings>

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.

C#

Compiler Error Message: CS0103: The name 'ConfigurationManager' does not exist in the current context

Source Error:

C#

Line 19:     protected void btnLogin_Click(object sender, EventArgs e)
Line 20:     {
Line 21:         SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["sqlconnection"].ConnectionString);
Line 22:         con.Open();
Line 23:         SqlCommand cmd = new SqlCommand("select * from UserInformation where UserName =@username and Password=@password", con);

Posted 20-Sep-13 6:23am

vanarajranjit

Updated 20-Sep-13 9:13am

ridoy

v3

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Comments

[no name] 20-Sep-13 12:27pm

From the documentation: "When you create a project, make sure to add a reference to the System.Configuration assembly. This assembly contains the ConfigurationManager class." Did you?

2 solutions

Solution 2

Use the directive

C#

using System.Configuration;

OR

C#

System.Configuration.ConfigurationManager.ConnectionStrings["sqlconnection"].ToString();

In either case, make sure you have the reference to System.Configuration dll.

HTML

(Add Reference->Assemblies->Framework->System.Configuration )

Posted 20-Sep-13 13:32pm

Kiran Kumar Veerabatheni

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Thomas Daniels · Accepted Answer · 2013-09-20T06:25:00

Solution 1

Add

C#

using System.Configuration;

at the top of your code file.
Also make sure that a reference to System.Configuration.dll is added.

Posted 20-Sep-13 6:25am

Thomas Daniels

Updated 20-Sep-13 6:33am

v2