|
please see the below image just clicking on it
https://i-msdn.sec.s-msft.com/dynimg/IC263184.png[^]
i often seen the below picture is used to show the relation between controller,view and model in asp.net mvc project. i do not know much about asp.net MVC but still i guess first request is process by controller and controller gets data from model and push that data to view by controller just to populate the view.
if anyone see the below image then probably notice that view can interact with model but that is not true. why people use the image for showing the relationship for mvc. if the above image is right so anyone please tell me how view can pass any info to model directly with taking any help from controller. please explain what the image is trying to say in details. thanks
tbhattacharjee
|
|
|
|
|
The model–view–controller design defines the interactions between them.
A controller can send commands to the model to update the model's state (e.g., editing a document). It can also send commands to its associated view to change the view's presentation of the model (e.g., by scrolling through a document).
A model notifies its associated views and controllers when there has been a change in its state. This notification allows the views to produce updated output, and the controllers to change the available set of commands. In some cases an MVC implementation may instead be 'passive' and other components must poll the model for updates rather than being notified.
A view requests information from the model that it uses to generate an output representation to the user.
hi
|
|
|
|
|
i just give the image and try to know how view and model can interact with each other without taking help from controller?
as far as i know a view or model can not directly talk to each other rather they always need to go via controller. am i right ? need discussion on this. thanks
tbhattacharjee
|
|
|
|
|
|
The view can interact with the model through a feature called model binding.
So for example, you have a view that will post back to a controller. If the view is tied to a model then the MVC Framework will loop through all of the form elements and match them up with the properties in the Model, and then pass the filled model over to the controller.
I would recommend going through a few tutorials over at www.asp.net[^] so you get a better understanding from a hands on approach.
|
|
|
|
|
Hi,
I think you are confused with arrow point towards model.
Don't worry. To understand this, you should know a bit about Design/UML/Diagram.
View -> Model means that View can have instance of Model OR View knows about Model.
This is true. In MVC pattern, we define model instance in View and Model is passed from controller to View. View can access Model while executing it.
Similarly,
Controller -> Model means that Controller has instance of Model OR Controller knows Model.
Controller -> View means that Controller has instance of View.
Anyways, this is very high level understanding and in my opinion the diagram is fundamentally correct.
Life is a computer program and everyone is the programmer of his own life.
|
|
|
|
|
I want to export my gridview data to csv file.
|
|
|
|
|
Here is an article on how to export Gridview to CSV in c#
|
|
|
|
|
already tried this. Not working.
|
|
|
|
|
Are you getting any errors? and is the gridview in a update panel?
|
|
|
|
|
i am able to view data in gridview as well as able to download csv file but its empty.
|
|
|
|
|
try the following
<%@ Page Language="C#" .......... EnableEventValidation="false"%>
in code don't forget to add
Public Overrides Sub VerifyRenderingInServerForm(control As Control)
End Sub
|
|
|
|
|
Hello Experts,
I have a Textbox and a button below it. In that Textbox, I am passing a session value and I want to make that button click event occur without actually clicking it.
Is that possible? If Yes How? Can you please tell me with sample code or tutorial?
Your help is much appreciated.
Thanks
Happy Coding!
|
|
|
|
|
The server click event or the client click event? What do you want to trigger the event? Is this web forms? MVC?
You can just call the click event in js on some event and it'll work, but you've not given enough information to go on, but look at this to get you started
http://api.jquery.com/click/[^]
|
|
|
|
|
ASP web forms. please tell me how to do
Your help is much appreciated.
Thanks
Happy Coding!
|
|
|
|
|
button is in ASP web form. I want that event to happen before user clicks on it.
Your help is much appreciated.
Thanks
Happy Coding!
|
|
|
|
|
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
<script src="//code.jquery.com/jquery-1.10.2.js"></script>
</head>
<body>
<form id="form1" runat="server">
<asp:TextBox ID="Text1" runat="server" />
<asp:Button ID="Button1" OnClick="Button1_Click" Text="Click" runat="server" />
<script type="text/javascript">
$(document).ready(function () {
// click the button on page load
// $("#<%=Button1.ClientID%>").click();
// or click the button when the textbox loses focus
$("#<%=Text1.ClientID%>").blur(function () {
$("#<%=Button1.ClientID%>").click();
});
});
</script>
</form>
</body>
</html>
|
|
|
|
|
My both the buttons are not in same.
<form id="TireQuickSearch" method="post" action="DealerTireSearchResults.aspx" onsubmit="return ValidateTireQuickSearch(this);">
<input type="hidden" name="FormAction" value="TireQuickSearch" />
<input type="hidden" name="SortOrder" value="<asp:Literal id='litSortOrderDescription' runat='server' /> />
<label> <input type="text" name="TireQuickSearch" id="PART#" class="tf1" value="<asp:Literal id='litTireQuickSearch' runat='server' /> />
</label>
<input name="SearchButton" type="image" src="images/btn_tireSearchADV-dim.jpg" disabled="disabled" /><br />
</form>
On the below button click I want my above Button click action to happen
<asp:Button ID="btnSubmit" runat="server" Text="Submit" />
Your help is much appreciated.
Thanks
Happy Coding!
|
|
|
|
|
<asp:Button ID="Button1" Text="Click" runat="server" OnClientClick="return doSearch();" />
<script type="text/javascript">
function doSearch()
{
// this will not work if the button is disabled as in your example
//$("[name='SearchButton'").click();
// can submit the form instead
$("#TireQuickSearch").submit();
return false;
}
|
|
|
|
|
Thank you 
Your help is much appreciated.
Thanks
Happy Coding!
|
|
|
|
|
Yes it is possible. suppose your button name is btnAdd and you want btnAdd_click() event fire automatically on page load (suppose) , so on pageload call btnAdd_Click() like this:
btnAdd_Click(this, null);
This will fire the event of btnAdd_Click() without actually clicked.
hi
|
|
|
|
|
When I'm trying accessing the service from the client the server unepectedly closing the service and it is throwing the error
An existing connection was forcibly closed by the remote host in wcf
above error at client side and it is highlighting that
public Empservice.Employee GetEmp(int empno)
{
return base.Channels.GetEmp(int empno);
}
|
|
|
|
|
|
in mvc people generate html this way and bind data also
@using (Html.BeginForm())
{
@Html.LabelFor(m => p.Name, "Name:")
@Html.TextBoxFor(m => p.Name)
<input type="submit" value="Create" />
}
but if i do not want to use html helper extension then how should i code to bind normal html controls and forms with model data. please come with a sample code. thanks
tbhattacharjee
|
|
|
|
|
@using (Html.BeginForm())
{
<label for="Name">Name:</label>
<input id="Name" name="Name" type="text" value="@Model.Name" />
<input type="submit" value="Create" />
}
Just view the page source to see what html the helpers are generating.
|
|
|
|
General 
News 
Suggestion 
Question 
Bug 
Answer 
Joke 
Praise 
Rant 
Admin 
Submit an article or tip
