Get connection string from app config

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How can I retrieve my connection string from my app config?

here is my app config:

C#

<?xml version="1.0"?>
<configuration>
    <configSections>
    </configSections>
    <connectionStrings>
     
        <add name="SqlConnectionString" connectionString="Data Source=(local);Initial Catalog=retriever;User ID=sa" providerName="System.Data.SqlClient"/>
     
    </connectionStrings>
    <startup> 
        
    <supportedRuntime version="v2.0.50727"/></startup>
</configuration>

here is my code:

C#

public SqlConnection SQcon = System.Configuration.ConfigurationManager.ConnectionStrings["SqlConnectionString"];
       public SqlCommand SQcmd;
       public SqlDataReader SQread;
       public SqlDataAdapter SQadapt;
       public SqlException SQexcept;
       public string SQdatasource = "SELECT * FROM dbo.Tick_Inventory ORDER BY invoiceDate_time";
       public int ProductCountHolder;
       public string Tickets;

however im getting an error
on

C#

public SqlConnection SQcon = System.Configuration.ConfigurationManager.ConnectionStrings["SqlConnectionString"];

how to fix this?

Posted 3-Mar-14 21:01pm

JB0301

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3 solutions

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*dan!sh* · Accepted Answer · 2014-03-03T21:07:00

Solution 1

ConnectionStrings collection does not return the SqlConnection object. It is a string. What you need is:

C#

SqlConnection connection = new SqlConnection (ConfigurationManager.ConnectionStrings["SqlConnectionString"].ConnectionString);

Posted 3-Mar-14 21:07pm

dan!sh

Updated 3-Mar-14 21:14pm

v2

Comments

JB0301 4-Mar-14 3:10am

It's not working either

dan!sh 4-Mar-14 3:13am

What error do you get?

dan!sh 4-Mar-14 3:15am

Check the updated reply.

Ramug10 · Accepted Answer · 2014-03-03T21:39:00

Solution 2

try this..

SqlConnection con = new SqlConnection(ConfigurationSettings.AppSettings["ConnectionString"].ToString());

Posted 3-Mar-14 21:39pm

Ramug10

ErBhati · Accepted Answer · 2014-03-03T21:56:00

Solution 3

C#

SqlConnection con = new SqlConnection(ConfigurationManager.AppSettings["ConnectionString"].ToString());

Posted 3-Mar-14 21:56pm

ErBhati

Comments

ErBhati 4-Mar-14 7:12am

plz select as answer for others if it helps you....

CHill60 4-Mar-14 8:51am

It would be a little unfair of the OP to accept your answer as it is identical to solution 2 that was posted an hour earlier than yours