Read setting from web.config

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How to read connection string setting from web.config
here is my sample code

C#

string connect= ConfigurationSettings.AppSettings["myconnection"];
    SqlConnection sqlConn = new SqlConnection(connect);
    sqlConn.Open();
    SqlCommand cmd = sqlConn.CreateCommand();

HTML

<appsettings>
       <connectionstrings>
    <add name="myconnection" connectionstring="server=SERVER1\\MSSQLSERVER2008;database=DataConverter;uid=sa;password=sa;" />
    </connectionstrings>
  </appsettings>

but it not working am using .net2.o and sqlserver2008
am unable to read connection string with the above syntax,am getting a Null string

Posted 4-Nov-11 2:09am

pradeep manne

Updated 4-Nov-11 4:10am

v4

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Prerak Patel 4-Nov-11 8:11am

Show part of your config file.

4 solutions

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Om Prakash Pant · Answer 1 · 2011-11-04T02:12:00

For 3.5

C#

//to read
ConnectionStringSettings connection = ConfigurationManager.ConnectionStrings["MyConnectionString"]
string connectionString = connection.ConnectionString

XML

<configuration>
<connectionStrings>
<add connectionString="" providerName="" name="MyConnectionString"/>
</connectionStrings>
</configuration>

For 2.0

XML

<appSettings>
<add key="myConnectionString" value=";" />
</appSettings>

C#

//to read
string connStr = ConfigurationSettings.AppSettings("myConnectionString");

Prerak Patel · Answer 2 · 2011-11-04T02:15:00

Solution 2

Or change your config as

XML

<appsettings>
      <add key="myconnection" value="server=SERVER1\\MSSQLSERVER2008;database=DataConverter;uid=sa;password=sa;"/>
</appsettings>

Ref: http://odetocode.com/code/345.aspx[^]

Posted 4-Nov-11 2:15am

Prerak Patel

koolprasad2003 · Answer 3 · 2011-11-04T02:18:00

Solution 3

put your connection string in web.config

HTML

<appSettings>
<add key="myConnectionString" value="server=localhost;database=myDb;uid=myUser;password=myPass;" />
</appSettings>

and retrive in code.

string connStr = ConfigurationSettings.AppSettings("myConnectionString");

Posted 4-Nov-11 2:18am

koolprasad2003

Comments

pradeep manne 4-Nov-11 9:09am

Hi am not getting the value of web config into the string connStr

pradeep manne · Answer 4 · 2012-01-13T01:23:00

Solution 4

XML

<AppSettings in web.config>
    <add key="FileUploadFolder" value="App_Uploaded_Files" />
    <add key="AppKey" value="Value in AppSetting key"/>
  </appSettings>

code behind

string folder_from_config = ConfigurationManager.AppSettings["FileUploadFolder"].ToString();

Posted 13-Jan-12 1:23am