how to give xml file source in app.config and write/read those xml files form winform?

DataSet ds = CreateDynamicDataSet();
ds.WriteXml(@"E:\AppScienti\AppScienti-POSLite\POSLite-Dev\XML\POSLite.xml");

private DataSet CreateDynamicDataSet()
{

    DataSet ds = new DataSet("DS");
    //ds.Namespace = "StdNamespace";
    dtOutletMapping.TableName = "Tables[2]";
    ds.Tables.Add(dtOutletMapping);
    dtxmlEmployee.TableName = "Tables[0]";
    ds.Tables.Add(dtxmlEmployee);
    dtxmlOrg.TableName = "Tables[1]";
    ds.Tables.Add(dtxmlOrg);

    return ds;
}

In above code I have path directly in winform and its working fine, now I want to keep path in app.config and use a path to write a dataset into file any possible solution please?

Ensure you have added reference to System.Configuration. (Right click on project and select "Add Refrence" and find it in ".Net" tab).

Modify the app.config file as shown below: Under appSettings, add your file name as shown below.

<configuration>
  <appSettings>
    <add key="xmlFile" value="c:\\users\\test.xml" />
  </appSettings>
</configuration>

Now in the code add the namespace

using System.Configuration;

And when you want read the file name, do it as shown below

string filename = ConfigurationManager.AppSettings.Get("xmlFile");

DataSet ds = CreateDynamicDataSet();
ds.WriteXml(filename);