Code the OO Web Page

Provides step-by-step instructions that guide you through the process of coding your ASP.NET Web page.

Update the Web.config File

The default Web.config file added when you created the solution does not contain the configuration code needed to access the COBOL runtime and configure the project to run COBOL applications. Here, you replace the default file with a provided updated file.

  1. In the Solution Explorer, right-click Web.config; then select Delete from the context menu.
  2. Click OK to delete the file.
  3. Right-click the OOSqlBookDemoWebApplication project; then select Add > Existing Item.
  4. Browse to the %PUBLIC%\Documents\Micro Focus\Visual COBOL\Samples\SQL\\OOSqlBookDemoWebApplication directory.
  5. Double-click Web.config.

Paint the Form

  1. In the Solution Explorer, right-click Default.aspx; then select View Designer from the context menu.
  2. At the bottom of the Form Designer, click Source.
  3. Add the following code immediately before the closing </asp:Content> element:
        <asp:Label ID="Label1" runat="server" Text="CATALOG SEARCH"></asp:Label>
        <asp:Label ID="catalogNumberLabel" runat="server" Text="Catalog Number"></asp:Label>
        <asp:TextBox ID="textBoxStockNo" runat="server"></asp:TextBox>
        <asp:Button ID="searchButton" runat="server" Text="Search" OnClick="searchButton_Click" />
        <asp:Label ID="errorLabel" runat="server" Text="Status" Visible="False"></asp:Label>
        <asp:TextBox ID="errorField" runat="server"></asp:TextBox>
        <asp:Label ID="Label2" runat="server" Text="RESULTS"></asp:Label>
        <asp:Label ID="titleLabel" runat="server" Text="Title"></asp:Label>
        <asp:TextBox ID="textBoxTitle" runat="server"></asp:TextBox>
        <asp:Label ID="authorLabel" runat="server" Text="Author"></asp:Label>
        <asp:TextBox ID="textBoxAuthor" runat="server"></asp:TextBox>
        <asp:Label ID="typeLabel" runat="server" Text="Type"></asp:Label>
        <asp:TextBox ID="textBoxType" runat="server"></asp:TextBox>
        <asp:Label ID="priceLabel" runat="server" Text="Price"></asp:Label>
        <asp:TextBox ID="textBoxPrice" runat="server"></asp:TextBox>
        <asp:Label ID="soldLabel" runat="server" Text="Sold"></asp:Label>
        <asp:TextBox ID="textBoxSold" runat="server"></asp:TextBox>
        <asp:Label ID="onHandLabel" runat="server" Text="On Hand"></asp:Label>
        <asp:TextBox ID="textBoxOnHand" runat="server"></asp:TextBox>
        <asp:Label ID="stockValueLabel" runat="server" Text="Stock Value"></asp:Label>
        <asp:TextBox ID="textBoxStockValue" runat="server"></asp:TextBox>
    Note: This is a short-cut method to painting the form. Alternatively, you could paint the form using the Toolbox. For more information, see the Painting a Button and a Label section in Tutorial: Developing .NET COBOL Applications.
  4. Save the form, but do not close the Form Designer.

Create a Click Event

  1. At the bottom of the Form Designer, click Design.
  2. Double-click the Search button on the form.

    This opens Default.aspx.cbl in the COBOL editor, and inserts a searchButton_Click method into the code. This method is known as a Click Event. At this point in development, the method is empty.

  3. Click Save All Save All.
  4. Close the Default.aspx file in the Form Designer.

Code the searchButton_Click method

This calls the legacy program and provides input values.

  1. In the COBOL editor, edit the code for the searchButton_Click method to read as follows:
           method-id searchButton_Click protected.
           working-storage section.
           01 book type OOSqlBookWrapper.SqlBook.
           01 anException type System.Exception.
           01 bookFunction string.
           local-storage section.
           procedure division using by value lnkSender as object
                                    by value lnkEvent as type EventArgs.
                   set book to type OOSqlBookWrapper.SqlBook::New()
                   set book::StockNumber to textBoxStockNo::Text
                   set bookFunction to "1"
                   invoke book::CallLegacyWithRunUnit(bookFunction)
                   invoke self::PopulateForm(book)
               catch anException
                   invoke self::DisplayException(anException)
           end method.

Code the PopulateForm and DisplayException methods

  1. In the COBOL editor, add code for the PopulateForm and DisplayException methods as follows:
           method-id PopulateForm final private.
           procedure division using aBook as type OOSqlBookWrapper.SqlBook.
               if aBook <> null
                   set errorLabel::Visible to false
                   set errorField::Visible to false
                   set textBoxStockNo::Text    to aBook::StockNumber
                   set textBoxTitle::Text      to aBook::Title
                   set textBoxAuthor::Text     to aBook::Author
                   set textBoxType::Text       to aBook::Type
                   set textBoxPrice::Text      to type System.Convert::ToString(aBook::RetailPrice)
                   set textBoxOnhand::Text     to type System.Convert::ToString(aBook::NumberOnHand)
                   set textBoxSold::Text       to type System.Convert::ToString(aBook::NumberSold)
                   set textBoxStockValue::Text to type System.Convert::ToString(aBook::StockValue)
                   set textBoxStockNo::Text    to "****"
                   set textBoxTitle::Text      to "*************************************"
                   set textBoxAuthor::Text     to "*************************************"
                   set textBoxType::Text       to "****"
                   set textBoxPrice::Text      to "****"
                   set textBoxOnhand::Text     to "****"
                   set textBoxSold::Text       to "****"
                   set textBoxStockValue::Text to "*****"
           end method.
           method-id DisplayException private.
           procedure division using by value lnkException as type System.Exception.
               set my-book to null
               set errorLabel::Visible to true
               set errorField::Visible to true
               set errorField::Text to lnkException::Message
               invoke self::PopulateForm(my-book)
           end method.
  2. Save the file and close the editor.