Dominic Burford - Professional Profile

Quote:

the number of people who think social media is a net positive for society is down to 40 percent.

private async Task<string> GetValueFromTextbox(string controlId)
{
    return await WebView.EvaluateJavaScriptAsync($"document.getElementById('{controlId}').value;");
}
private async Task<string> GetValueFromCheckbox(string controlId)
{
    return await WebView.EvaluateJavaScriptAsync($"document.getElementById('{controlId}').checked;");
}
private async Task<string> GetValueFromRadioButton(string controlname)
{
    return await WebView.EvaluateJavaScriptAsync($"document.querySelector(\'input[name=\"{controlname}\"]:checked\').value;");
}
private async Task<string> GetValueFromDropdownn(string controlId)
{
    return await WebView.EvaluateJavaScriptAsync($"document.getElementById(\'{controlId}\').options[document.getElementById(\'{controlId}\').selectedIndex].value;");
}

public class BaseFormModel : NotifyPropertyChangedBase
{
}

public interface IFormData<T>
{
    T CreateDefaultModel();
}

public class MessageUsModel : BaseFormModel, IFormData<MessageUsModel>
{
    private string _messageToSend;

    [DisplayOptions(Header = MessageUsModelConstants.MessageHeader)]
    [NonEmptyValidator(MessageUsModelConstants.MessageError)]
    public string MessageToSend
    {
        get => _messageToSend;
        set
        {
            if (_messageToSend == value) return;
            _messageToSend = value;
            OnPropertyChanged();
        }
    }

    public MessageUsModel CreateDefaultModel()
    {
        return new MessageUsModel
        {
            _messageToSend = ""
        };
    }
}

public abstract class ViewModelBase<T> : NotifyPropertyChangedBase where T : new()
{
    /// <summary>
    /// This is the View-Model's reference to the Model. Use this whenever the view-model needs to reference the model.
    /// </summary>
    public T FormModel = new T();

    /// <summary>
    /// Implement this method in the derived class to define what actions to take when the user
    /// submits data from one of the data-entry forms 
    /// </summary>
    /// <returns></returns>
    public abstract Task PostCompleteTask();
}

public class MessageUsViewModel : ViewModelBase<MessageUsModel>
{
    public MessageUsModel MessageUsModel;
        
    public MessageUsViewModel()
    {
        this.MessageUsModel = this.FormModel.CreateDefaultModel();
    }

    public override async Task PostCompleteTask()
    {
        //implement your code here to submit the form data
    }
}

this.MessageUsModel = this.FormModel.CreateDefaultModel();

[XamlCompilation(XamlCompilationOptions.Compile)]
public partial class MessageUsView : ContentPage
{
    public MessageUsViewModel Muvm;

    public MessageUsView()
    {
        InitializeComponent();

        //initiate the view-model and bind it to the form
        this.Muvm = new MessageUsViewModel();
        this.BindingContext = this.Muvm;
    }

    private async void DataFormValidationCompleted(object sender, FormValidationCompletedEventArgs e)
    {
        dataForm.FormValidationCompleted -= this.DataFormValidationCompleted;

        if (e.IsValid)
        {
            await this.Muvm.PostCompleteTask();
        }
    }

    private void CommitButtonClicked(object sender, EventArgs e)
    {
        dataForm.FormValidationCompleted += this.DataFormValidationCompleted;
        dataForm.CommitAll();
    }
}

<input:RadDataForm x:Name="dataForm" CommitMode="Immediate"  />
<input:RadButton x:Name="CommitButton" Text="Save" Clicked="CommitButtonClicked" IsEnabled="True"/>

this.Muvm = new MessageUsViewModel();
this.BindingContext = this.Muvm;

WebPublishMethod=Package;
PackageFileName=$(Build.ArtifactStagingDirectory)\package.zip;
DesktopBuildPackageLocation=$(Build.ArtifactStagingDirectory)\package.zip;
PackageAsSingleFile=true;
PackageLocation=$(Build.ArtifactStagingDirectory)\package.zip;
DeployOnBuild=true;
DeployTarget=Package

$(Build.ArtifactStagingDirectory)

<div>
  rest of the Razor page goes here
</div>
<script>
    $(document).ready(function () {
        var queryparams = window.location.search;
        //using URLSearchParams to extract the querystring parameter
        if (queryparams && typeof (queryparams) === "string" && queryparams.length > 0) {
            var urlParams = new URLSearchParams(window.location.search);
            var documentid = urlParams.get('documentid');
            //call the JS function that will make the AJAX request and fetch the data
            loadDocumentManagerForDocument(documentid ); //see below for definition!
        }
    });
</script>

function loadDocumentManagerForDocument(documentid) {
    if (documentid) {

        //AJAX call to Razor page handler to fetch the document details

        $.ajax({
            type: "GET",
            url: `/DocumentManager/DocumentManager?handler=document&documentid=${documentid}`,
            contentType: "application/json",
            dataType: "json",
            success: function (response) {
                //populate the form elements with the returned data
            },
            failure: function (response) {
                //handle the error
            }
        });
    }
}

public async Task<JsonResult> OnGetDocument(int documentid)
{
    JsonResult result = null;
    var response = await new DocumentManagerPageModelService().GetDocumentById(documentid);
    result = new JsonResult(document);
    return result;
}

[HttpPost]
[EnableCors(origins: "*", headers: "*", methods: "*")]
public async Task<HttpResponseMessage> WebPostData(string formname, [FromBody] JToken postdata)
{
    //log the request
    base.LogMessage(string.Format(CultureInfo.InvariantCulture, "{0}.{1}", GetType().Name, "WebPostDataToServiceBus"));
    base.LogMessage($"Formname={formname}");

    //authenticate the request
    if (!base.IsRequestAuthenticated())
    {
        base.LogMessage("Request failed authentication");
        throw new HttpResponseException(Request.CreateResponse(HttpStatusCode.Forbidden));
    }
    //add the request to the service bus for processing
    return await this.AddWebTaskToServiceBus(formname, postdata);
}

"Path\To\MSBuild\MSBuild.exe" /p:configuration="release";platform="any cpu";WebPublishMethod=Package;PackageFileName="\MyFolder\package.zip";DesktopBuildPackageLocation="\MyFolder\package.zip";PackageAsSingleFile=true;PackageLocation="\MyFolder\package.zip";DeployOnBuild=true;DeployTarget=Package

<form asp-page-handler=@toolbar.PageHandler method=@toolbar.Method>
  <button class="btn btn-default">@toolbar.DisplayText</button>
</form>

<form asp-page-handler=@toolbar.PageHandler method=@toolbar.Method onclick="return confirm('Are you sure you want to delete this?')">
  <button class="btn btn-default">@toolbar.DisplayText</button>
</form>

<form asp-page-handler="upload" method="post">
  @(Html.Kendo().Upload()
    .Name("files")
  )
  <button>Save</button>
</form>

public void OnPostUpload(IEnumerable<IFormFile> files)
{
  //do something with the file(s) here
}

<form asp-page-handler="Customers" method="GET">
    <button class="btn btn-default">List Customers</button>
</form>

public void OnGetCustomers()
{
    //fetch a list of customer here!
}

<form asp-page-handler="Customer" method="GET">
    <button class="btn btn-default">Get Customer</button>
    <input id="handler_parameter" type="hidden" name="selectedCustomerID" value="0"/>
</form>

public void OnGetCustomer(int selectedCustomerID)
{
    //fetch a specific customer here!
}

function onDocumentViewNode(data) {
    $("#handler_parameter")[0].value = data.id;
}

$.ajax({
    type: "GET",
    url: "/Customer?handler=customer&selectedCustomerID="+ data.id,
    contentType: "application/json",
    dataType: "json",
    success: function (response) {
      //do something here
    },
    failure: function (response) {
      console.log(JSON.stringify(response));
    }
});

public class MockHttpSession : ISession
{
    readonly Dictionary<string, object> _sessionStorage = new Dictionary<string, object>();
    string ISession.Id => throw new NotImplementedException();
    bool ISession.IsAvailable => throw new NotImplementedException();
    IEnumerable<string> ISession.Keys => _sessionStorage.Keys;

    void ISession.Clear()
    {
        _sessionStorage.Clear();
    }
    Task ISession.CommitAsync(CancellationToken cancellationToken)
    {
        throw new NotImplementedException();
    }
    Task ISession.LoadAsync(CancellationToken cancellationToken)
    {
        throw new NotImplementedException();
    }
    void ISession.Remove(string key)
    {
        _sessionStorage.Remove(key);
    }
    void ISession.Set(string key, byte[] value)
    {
        _sessionStorage[key] = Encoding.UTF8.GetString(value);
    }
    bool ISession.TryGetValue(string key, out byte[] value)
    {
        if (_sessionStorage[key] != null)
        {
            value = Encoding.ASCII.GetBytes(_sessionStorage[key].ToString());
            return true;
        }
        value = null;
        return false;
    }
}

public void MyFunction(ISession context = null)
{
    if (context == null)
    {
        context = HttpContext.Session;
    }

    string email = context.Get("UserEmail");
    //rest of the function code goes here
}

[TestMethod]
public async Task InvokeAsyncTest()
{
    MainMenuViewComponent component = new MainMenuViewComponent();
    var mockContext = MockHttpContext();

    var result = await component.InvokeAsync(mockContext);

    Assert.IsNotNull(result);
}

private static ISession MockHttpContext()
{
    MockHttpSession httpcontext = new MockHttpSession();
    httpcontext.Set<string>("UserEmail", "unittest@mycompany.com");
    return httpcontext;
}