Form data

// Gets the form object representing the 'ContactUs' form on the current site
BizFormInfo formObject = BizFormInfo.Provider.Get("ContactUs", SiteContext.CurrentSiteID);

if (formObject != null)
{
    // Gets the class name of the 'ContactUs' form
    DataClassInfo formClass = DataClassInfoProvider.GetDataClassInfo(formObject.FormClassID);
    string formClassName = formClass.ClassName;

    // Creates a new data record for the form
    BizFormItem newFormItem = BizFormItem.New(formClassName);

    // Sets the values for the form's fields (UserMessage in this case)
    newFormItem.SetValue("UserMessage", "This is a message submitted through the API.");

    // Saves the new form record into the database
    // Set values for all 'Required' fields in the form before calling the Insert method, otherwise an exception will occur
    newFormItem.Insert();

    // Obtains a factory object used to create a form notification sender service for the given form
    IBizFormMailSenderFactory senderFactory = Service.Resolve<IBizFormMailSenderFactory>();

    // Creates an instance of the form notification sender for the inserted form item
    IBizFormMailSender sender = senderFactory.GetFormMailSender(formObject, newFormItem);

    // Sends a notification email to users (as specified on the form's 'Email notification' tab)
    sender.SendNotificationEmail();

    // Sends a confirmation email to the submitter (based on the form's autoresponder settings)
    sender.SendConfirmationEmail();
}

// Gets the form object representing the 'ContactUs' form on the current site
BizFormInfo formObject = BizFormInfo.Provider.Get("ContactUs", SiteContext.CurrentSiteID);

if (formObject != null)
{
    // Gets the class name of the 'ContactUs' form
    DataClassInfo formClass = DataClassInfoProvider.GetDataClassInfo(formObject.FormClassID);
    string formClassName = formClass.ClassName;

    // Loads the form's data
    ObjectQuery<BizFormItem> data = BizFormItemProvider.GetItems(formClassName);

    // Loops through the form's data records
    foreach (BizFormItem item in data)
    {
        // Gets the values of the 'UserEmail' and 'UserMessage' text fields for the given data record
        string emailFieldValue = item.GetStringValue("UserEmail", "");
        string messageFieldValue = item.GetStringValue("UserMessage", "");
    }
}

// Gets the form object representing the 'ContactUs' form on the current site
BizFormInfo formObject = BizFormInfo.Provider.Get("ContactUs", SiteContext.CurrentSiteID);

if (formObject != null)
{
    // Gets the class name of the 'ContactUs' form
    DataClassInfo formClass = DataClassInfoProvider.GetDataClassInfo(formObject.FormClassID);
    string formClassName = formClass.ClassName;

    // Loads all data records from the form whose 'UserEmail' field ends with the ".net" suffix
    ObjectQuery<BizFormItem> data = BizFormItemProvider.GetItems(formClassName)
                                                            .WhereEndsWith("UserEmail", ".net");

    // Loops through the form's data records
    foreach (BizFormItem item in data)
    {
        // Assigns and saves a value for the form record's 'InternalNote' field
        item.SetValue("InternalNote", "This note was added by the system.");
        item.SubmitChanges(false);
    }
}

// Gets the form object representing the 'ContactUs' form on the current site
BizFormInfo formObject = BizFormInfo.Provider.Get("ContactUs", SiteContext.CurrentSiteID);

if (formObject != null)
{
    // Gets the class name of the 'ContactUs' form
    DataClassInfo formClass = DataClassInfoProvider.GetDataClassInfo(formObject.FormClassID);
    string formClassName = formClass.ClassName;

    // Loads all data records from the form that have an empty value in the 'UserMessage' field
    ObjectQuery<BizFormItem> data = BizFormItemProvider.GetItems(formClassName)
                                                            .WhereEmpty("UserMessage");

    // Loops through the form's data records
    foreach (BizFormItem item in data)
    {
        // Deletes all files stored in the form's fields
        BizFormInfoProvider.DeleteBizFormRecordFiles(formClass.ClassFormDefinition, item, SiteContext.CurrentSiteName);

        // Deletes the form record from the database
        item.Delete();
    }
}