How Can I Programmatically Modify a Web.config File Using C#?
Jan 11, 2025 pm 06:02 PMUse C# (.NET) programming to modify the Web.config file
By modifying the web.config file through C# programming, developers can dynamically adjust application settings at runtime. One way is to use configuration objects.
Load Web.config into the configuration object
To load web.config into a configuration object, use the WebConfigurationManager.OpenWebConfiguration
method:
var configuration = WebConfigurationManager.OpenWebConfiguration("~");
Modify connection string
To modify the connection string, navigate to the appropriate section in the configuration object:
var section = (ConnectionStringsSection)configuration.GetSection("connectionStrings");
Find the specific connection string you want to modify:
section.ConnectionStrings["MyConnectionString"];
Set new connection string value:
section.ConnectionStrings["MyConnectionString"].ConnectionString = "Data Source=...";
Save the modified Web.config
When you are done making changes, save the changes back to the web.config file:
configuration.Save();
More examples
For more detailed examples, please refer to the following resources:
- MSDN: http://m.miracleart.cn/link/2808e33b0ef26bac248b17936f0f1938
- Stack Overflow: http://m.miracleart.cn/link/ea87de84e18a339d4efa00144c5b0fe3
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