title: How to get ValueMember value from ComboBox C# Winforms?
body: <p>I'm having some trouble trying to get the ValueMember value I've set. I'm trying to use a combobox to select a windows forms report. I can get the Name but not RptValue. Here's my code:</p>
  
  <pre><code>        private class Data
      {
          public string Name { get; set; }
          public string RptValue { get; set; }
      }
  
      private void BaseForm_Load(object sender, EventArgs e)
      {
          this.rvDoctorReportViewer.RefreshReport();
          comboBox1.Items.Add(new Data { Name="Select", RptValue="Select"});
          comboBox1.Items.Add(new Data { Name = "All Food Values", RptValue = "AllFoodValues.rdlc" });
          comboBox1.Items.Add(new Data { Name = "All Readings", RptValue = "AllReadings.rdlc" });
          comboBox1.Items.Add(new Data { Name = "Avg Food Values by Date", RptValue = "AvgFoodValuesByDate.rdlc" });
          comboBox1.Items.Add(new Data { Name = "Avg Food Values by Meal", RptValue = "AvgFoodValuesByMeal.rdlc" });
          comboBox1.Items.Add(new Data { Name = "Avg Readings by Date", RptValue = "AvgReadingsByDate.rdlc" });
          comboBox1.Items.Add(new Data { Name = "Avg Readings by Time", RptValue = "AvgReadingsByTime.rdlc" });
          comboBox1.Items.Add(new Data { Name = "Avg Readings by Event", RptValue = "AvgReadingsByEvent.rdlc" });
          comboBox1.Items.Add(new Data { Name = "Blood Pressure Chart", RptValue = "BPChart.rdlc" });
          comboBox1.Items.Add(new Data { Name = "Blood Pressure Report", RptValue = "BPReport.rdlc" });
          comboBox1.Items.Add(new Data { Name = "Detail Food Values by Meal", RptValue = "DetailFoodValuesByMeal.rdlc" });
          comboBox1.Items.Add(new Data { Name = "Doctor Detail Report", RptValue = "DoctorDetailReport.rdlc" });
          comboBox1.Items.Add(new Data { Name = "Food Chart", RptValue = "FoodChart.rdlc" });
          comboBox1.Items.Add(new Data { Name = "Pumper Detail Report", RptValue = "PumperDetailReport.rdlc" });
          comboBox1.Items.Add(new Data { Name = "Reading Charts", RptValue = "ReadingCharts.rdlc" });
          comboBox1.Items.Add(new Data { Name = "Total Daily Food Intake", RptValue = "TotalIntakeDailyFood.rdlc" });
          comboBox1.DisplayMember = "Name"; // This works fine
          comboBox1.ValueMember = "RptValue"; // This is the problem. It renders as RptValue instead of the value
          comboBox1.SelectedIndex = 0;
      }
  
      private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
      {
          if (comboBox1.SelectedIndex &gt; 0)
          {
              string strReport;
              strReport = "ReportViewer." + comboBox1.ValueMember.ToString();
              rvDoctorReportViewer.Reset();
              rvDoctorReportViewer.LocalReport.ReportEmbeddedResource = strReport;
              this.rvDoctorReportViewer.RefreshReport();
          }
      }
  </code></pre>