I'm trying to use input from a windows form app to enter into a localdb, however when I send the data to the database it returns "the config system failed to initialize".
try
{
SqlConnection conn = new SqlConnection(System.Configuration.ConfigurationManager.ConnectionStrings["database"].ConnectionString);
SqlCommand cmd = conn.CreateCommand();person newPerson = new person(FirstNameBox.Text, phoneBox.Text, emailBox.Text, LastNameBox.Text);
cmd.CommandText = #"INSERT INTO Person (FirstName, LastName, Email,Phone)
VALUES(#FirstName, #LastName, #Email, #Phone)";
cmd.Parameters.AddWithValue("#FirstName", newPerson.getFirstName());
cmd.Parameters.AddWithValue("#LastName", newPerson.getLastName());
cmd.Parameters.AddWithValue("#Email", newPerson.getEmail());
cmd.Parameters.AddWithValue("#Phone", newPerson.getPhone());
conn.Open();
cmd.ExecuteNonQuery();
conn.Close();
if (!ValidateForm())
return;
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, Application.ProductName,
MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
}
and this is the app.config part
<?xml version="1.0" encoding="utf-8" ?>
<configSections>
<connectionStrings>
<add name="database"
connectionString=" Data Source=(LocalDB)\v11.0;AttachDbFilename=C:\Users\Matthew\Documents\Visual Studio 2012\Projects\Midterm\Midterm\Database1.mdf;Integrated Security=True"></add>
</connectionStrings>
</configSections>
<connectionStrings>
<add name="Midterm.Properties.Settings.Database1ConnectionString"
connectionString="Data Source=(LocalDB)\v11.0;AttachDbFilename=|DataDirectory|\Database1.mdf;Integrated Security=True"
providerName="System.Data.SqlClient" />
</connectionStrings>
<startup>
<supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5" />
</startup>
The most obvious issue I'm seeing here is that your app.config is specifying a <connectionString> section, where it should be <connectionStrings> (note the s).
You may want to provide your entire app.config as there may be other syntax/configuration issues that prevent ConfigurationManager from loading your app.config.
Edit for updated app.config:
Your app.config file is incorrectly formatted. <configSections> shouldn't be the root element of the file (it should be <configuration>).
The MSDN documentation for ConfigurationManager.ConnectionStrings shows an example of what a app.config file should be formatted like.
But, in short, the <connectionStrings> element (and the other elements such as <startup>) should be a child element of <configuration>.
What your app.config should be like:
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<connectionStrings>
*** ADD YOUR <add> LINES HERE ***
</connectionStrings>
<startup>
<supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5" />
</startup>
</configuration>
Related
I need to use a different connection string than the one in the default settings value in the settings designer in order to run on my staging PC.
I have in settings.designer.cs:
[global::System.Configuration.DefaultSettingValueAttribute("Data Source=MyServer\\MyDB;Initial Catalog=MyDB;Integrated Security=True;Pers" +
"ist Security Info=True")]
public string MyConnectionString {
get {
return ((string)(this["MyConnectionString"]));
}
}
My app.config is this:
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<connectionStrings>
<clear />
<add name="MyConnectionString " connectionString=Data Source=MyServer2\\MyDB;Initial Catalog=MyDB;;Trusted_Connection=True"
providerName="System.Data.SqlClient" />
</connectionStrings>
<startup>
<supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5.2" />
</startup>
</configuration>
I want the application to use the settings in app.config but it persists in using the settings in the settings designer file.
I have tried various permutations of the following as well:
<add name="AppName.Properties.Settings.Default.MyConnectionString" connectionString=Data Source=MyServer2\\MyDB;Initial Catalog=MyDB;;Trusted_Connection=True"
providerName="System.Data.SqlClient" />
such as:
AppName.Properties.Settings.GlobalReference.Default.MyConnectionString
and:
ApplicationSettings.AppName.Properties.Settings.GlobalReference.Default.MyConnectionString
Any thoughts or ideas would be greatly appreciated.
In order for this to work, you have to have System.Configuration in your references.
you need to access the configuration Manager
System.Configuration.ConfigurationManager.ConnectionStrings["connectionStringName"].ConnectionString;
change your connection string name to something more simple or you'll have to use all of that
System.Configuration.ConfigurationManager.ConnectionStrings["AppName.Properties.Settings.Default.MyConnectionString"].ConnectionString;
if you want to use system properties you should add the system.reflection reference
I am a beginner and learning WPF Application. I have a simple project and in that I want to read DB Configuration string from App.Config File. But I am not able to do so. Below is my attempt:
APP.Config File:
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<startup>
<supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.6.1" />
</startup>
<connectionStrings>
<add name="DBCS" connectionString="Data Source=.\;Initial Catalog=Connect;Integrated Security=SSPI" providerName="System.Data.SqlClient" />
</connectionStrings>
</configuration>
CS Code:
public static void GetDataFromDB()
{
//var CS = #"Data Source=.\;Initial Catalog=Connect;Integrated Security=SSPI";
// ABOVE CODE WORKS FINE
string CS = ConfigurationManager.ConnectionStrings["DBCS"].ConnectionString;
using (SqlConnection con = new SqlConnection(CS))
{
con.Open();
SqlDataAdapter da = new SqlDataAdapter("Select * from tblTenant", con);
DataSet ds = new DataSet();
da.Fill(ds);
}
}
Edit:
You need to put the connnection string in the App.config of the running WPF application and not in the DAL or any other class library.
The ConfigurationManager class reads the configuration file of the running executable.
Add "clear" to your app.config before the connections string definition. It will look like this :
<connectionStrings>
<clear/>
<add name="DBCS" connectionString="Data Source=.\;Initial Catalog=Connect;Integrated Security=SSPI" providerName="System.Data.SqlClient" />
</connectionStrings>
Try to change in the App.config:
You can add Connection string to both DAL and UI projects.
Try removing Data Source =.\ to Data Source =.
Here is my AppConfig File
<?xml version="1.0" encoding="utf-8"?>
<configuration>
<startup>
<supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5"/>
</startup>
<connectionStrings>
<add name="Connection" connectionString="(local)\SQLexpress"/>
<add name="MainPrinter" connectionString=""/>
</connectionStrings>
</configuration>
And I want to change MainPrinter's Name
Here is what i'm trying to do:
Configuration config = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);
config.AppSettings.Settings["MainPrinter"].Value = "Epson";
config.Save(ConfigurationSaveMode.Modified);
ConfigurationManager.RefreshSection("connectionStrings");
But i dont take any result
I have my config file with below configurations:
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<configSections>
<section name="dataConfiguration" type="Microsoft.Practices.EnterpriseLibrary.Data.Configuration.DatabaseSettings, Microsoft.Practices.EnterpriseLibrary.Data" />
</configSections>
<dataConfiguration defaultDatabase="myConnectionString" />
<connectionStrings>
<add name="myConnectionString" connectionString="Data Source=mydatasource;Max Pool Size=100;Pooling=true; Initial Catalog=MyDB;User ID=Myuser;Password=Password;Connection Timeout=60" providerName="System.Data.SqlClient" />
</connectionStrings>
<startup>
<supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.6.2" />
</startup>
</configuration>
As you can see, I have set the default dataconfiguration to use myConnectionString as the default connection string, but in code behind (c#) how can I access this connection string without having to provide the name i.e. myConnectionString
So in below code:
string connectionString = ConfigurationManager.ConnectionStrings["myConnectionString"].ConnectionString;
SqlConnection cnn = new SqlConnection(connectionString);
SqlBulkCopy sbc = new SqlBulkCopy(cnn);
I would like to skip hardcoding the name of the connection string.
var dataConfig = (Microsoft.Practices.EnterpriseLibrary.Data.Configuration.DatabaseSettings)System.Configuration.ConfigurationManager.GetSection(
"dataConfiguration");
string connectionString = ConfigurationManager.ConnectionStrings[dataConfig.DefaultDatabase].ConnectionString;
That's what I can tell from typical usage of custom config sections and DatabaseSettings class.
EDIT: I have tested it in LINQPad with your exact app.config, got result:
Data Source=mydatasource;Max Pool Size=100;Pooling=true; Initial Catalog=MyDB;User ID=Myuser;Password=Password;Connection Timeout=60
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<Connectionstring>
<add key="questionpaper" value="server=localhost;database=Question_info;
UID=root;password=SATISH;"/>
</Connectionstring>
<startup>
<supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5" />
</startup>
</configuration>
this is my app.config but unable to connect to MySql server
so please tell me how to deal with this problem
How to write mysql connection string in app.config in c#
You need to pluralize the connectionStrings tag.
<connectionStrings>
<add name"ConnectionStringName" connectionString="Data Source=serverName;Initial Catalog=databaseName;Intergated Security=SSPI;Application Name=My.Application.Name" providerName="System.Data.SqlClient" />
</connectionStrings>
The add key/value tag is also the format to use for appSettings, not connectionStrings.
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<connectionStrings>
<add name="questionpaper" connectionString="SERVER=localhost; DATABASE=Question_info; UID=root; PASSWORD=SATISH" />
</connectionStrings>
<startup>
<supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5" />
</startup>
</configuration>