title: Get value from a variable from another viewmodel
body: <p>In ViewModel A I have a string variable <code>_projectName</code></p>
  
  <p>ViewModel A:</p>
  
  <pre><code>private string _projectName;
  private void ProjectName(string ProjectName)
  {
      _projectName = ProjectName;
  }
  </code></pre>
  
  <p>When later on when ViewModel B gets called I want to use the value of this instance and use it to set as datasource for a DB connection</p>
  
  <p>ViewModel B</p>
  
  <pre><code>String dbConnectionString = @"Data Source =" + _projectName + "" + ".sqlite";
  </code></pre>