0

Hi I am New to C# i Am trying to create a grade book form but I cannot build successfully because of the following error.
The name 'InitializeComponent' does not exist in the current context

// Fig. 19.7: GradeBook.cs
// A reusable Windows Form for the examples in this chapter.
using System;
using System.Windows.Forms;

namespace GradeBook
{
   public partial class GradeBook : Form
   {
      protected int TextBoxCount = 5; // number of TextBoxes on Form

      // enumeration constants specify TextBox indices
      public enum TextBoxIndices
      {
         
         
         LAST,
 	     FIRST,
	     ID,
	     CLASS,
	     GRADE,
         
      } // end enum

      // parameterless constructor
      public GradeBook()
      {
         InitializeComponent();
      } // end constructor

      // clear all TextBoxes
      public void ClearTextBoxes()
      {
         // iterate through every Control on form
         foreach ( Control guiControl in Controls )
         {
            // determine whether Control is TextBox
            if ( guiControl is TextBox )
            {
               // clear TextBox
               ( ( TextBox ) guiControl ).Clear();
            } // end if
         } // end for
      } // end method ClearTextBoxes

      // set text box values to string array values
      public void SetTextBoxValues( string[] values )
      {
         // determine whether string array has correct length
         if ( values.Length != TextBoxCount )
         {
            // throw exception if not correct length
            throw ( new ArgumentException( "There must be " +
               ( TextBoxCount + 1 ) + " strings in the array" ) );
         } // end if
         // set array values if array has correct length
         else
         {
            // set array values to text box values
            
          
            lastNameTextBox.Text = values[ ( int ) TextBoxIndices.LAST ];
            firstNameTextBox.Text = values[ ( int ) TextBoxIndices.FIRST ];
            iDTextBox.Text = values[ ( int ) TextBoxIndices.ID ];
            classTextBox.Text = values[ ( int ) TextBoxIndices.CLASS ];
            gradeTextBox.Text = values[ ( int ) TextBoxIndices.GRADE ];
         } // end else
      } // end method SetTextBoxValues

      // return text box values as string array
      public string[] GetTextBoxValues()
      {
         string[] values = new string[ TextBoxCount ];

         // copy text box fields to string array
     
         values[ ( int ) TextBoxIndices.LAST ] = lastNameTextBox.Text;
         values[ ( int ) TextBoxIndices.FIRST ] = firstNameTextBox.Text;
         values[ ( int ) TextBoxIndices.ID ] = iDTextBox.Text;
         values[ ( int ) TextBoxIndices.CLASS ] = classTextBox.Text;
         values[ ( int ) TextBoxIndices.GRADE ] = gradeTextBox.Text;

         return values;
      } // end method GetTextBoxValues
   } // end class  GradeBook.cs
} // end namespace GradeBook

Edited by __avd: Added [code] tags.

4
Contributors
6
Replies
7
Views
6 Years
Discussion Span
Last Post by carlitosway17
0

You have no method in your class called InitializeComponent, which you call in your parameterless constructor.

0

You have no method in your class called InitializeComponent, which you call in your parameterless constructor.

I don't mean to be a bother but would you mind you showing me in code?

0

Code looks fine to me, including the constructror. The only thing that bothers me, are the names of the nameSpace and the class name - they are both the same. Maybe is this the issue. Not sure, never tried with both same names.
Mitja

0

In your method ClearTextBoxes (Line 32) you walk through the Controls of your form and test if they are a TextBox (Line 38) so there is no need to cast to a TextBox on line 41.
InitializeComponent(); is from a partial class component is Visual Studio a part you are missing?

This question has already been answered. Start a new discussion instead.
Have something to contribute to this discussion? Please be thoughtful, detailed and courteous, and be sure to adhere to our posting rules.