I am a ASP.Net Web Forms developer and new in MVC. I observed that MVC reccommend not to have code behind file. In Web Forms, we handle events in code behind then change properties of various controls there. How to do the same in MVC? For example, if I have to change back color of a label on click of a button then how to do this in MVC?
View 4 RepliesI am using calender control I want to change it's visibility on button click event. This is my form design:
<form id="form1" runat="server">
<asp:Calendar ID="Calendar1" runat="server" Visible="False"></asp:Calendar>
<asp:Button ID="Button1" runat="server" Text="Show" />
</form>
I created a gridview and bound it to a datasource, I had some problems that do not relate to this post.
then I created another datasource programmatically and deleted the old one,
and I bound it using gridview.DataSource = source.
now when I click the edit button the first time nothing happens, when I click edit on another row, the previous row I clicked on changes to editing mode and shows update cancel links, then when I click a 3rd one, the 2nd one changes to editing mode etc...
I have added a few WebUserControl's to a form and I want to check their properties values in a code behind (vb) when a user click a button.I tried unsuccessfully to get a reference to these controls using the TypeOf and GetType functions...How do I get a reference to the webUserControls ?
View 5 RepliesI need to access a control inside a repeater and change its properties. To enable it or not. I got an erorr message Object reference not set to an instance of an object. Here is my code inside a method. protected void
rptCAP_ItemDataBound(object sender, RepeaterItemEventArgs e)
{
LinkButton lnDel = (LinkButton)rptCap.FindControl("lnkDelete");
lnkDel.Enabled = false; //<<<<< this is where the error occur
}
The name of the repeater control is id="rptCAP"
I have a very simple user control in my web site project which has public property declarations as following
[code].....
When i drag the ascx file to one of my aspx page and when i go to code behind of aspx page i can access the controls properties through intelisense, but when i run the project through visual studio i get error "The name 'uctTest1' does not exist in the current context?
This is the line where Error shows when i run the project uctTest.StartDate = DateTime.Now;
aspx page markup :
[code]....
I have a master page with a user control on it. How do I change the user control's properties from a content page?In my ascx file I created this 2 property:
[Code]....
In content page PageLoad event I wrote
[Code]....
How could I change (programmatically) a couple of properties in a grdiview template ? For instance, the CalendarExtender6.enabled and the textbox, Duetext.readonly.
[Code].....
I have a GridView containing records from a table which can be deleted or updated. If you want to edit a row, it should display the update and cancel buttons so that you can keep or cancel the current edit (I hide update and cancel as default). I am using the following asp for the button column of the GridView:
<asp:TemplateField visible ="true" >
<HeaderTemplate>
<div id = "header">Maintain</div>
[code]...
i have multilingual asp.net site.there is a masterpage and default.aspx.I put two buttons in masterpage - one to click when i want to change the language to english, second for polish. Of course, I want to change the language after click on these buttons (and all changes should appear automatically on the page)here is a code for both:
protected void EnglishButton_Click(object sender, ImageClickEventArgs e)
{
string selectedLanguage = "en-US";
//Sets the cookie that is to be used by InitializeCulture() in content page
HttpCookie cookie = new HttpCookie("CultureInfo");
cookie.Value = selectedLanguage;
[code]...
I have a button in a details view that I want to change the properties of at run time. When the user clicks the edit button the details view goes into edit mode. I also want the edit button to turn into an update(or save) button so the use can click it to persist the changes done in edit mode. I've had to create a new instance of the button which I can do. I've done that with the cast below, I assume this is a good way to do this. I'm now having difficulty assigning the properties. I tried this but get a "Object Reference not set to an instance of an object" error. I thought I was working with an instance of the object in the code below, but the compiler doesn't agree. How do I set the text, and other properties for my button instance?
[Code]....
My gridview works fine without the following code, but as soon as i add this, there is a probleme, when i click on delete or update button, i see no change, it's all the same.
Protected Sub GridView1_RowDataBound(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewRowEventArgs)
asp.net Code:
'If e.Row.RowType = DataControlRowType.DataRow Then
Dim A As Integer
A = e.Row.Cells(13).Text.Length
If A > 6 Then
e.Row.Cells(13).Text = e.Row.Cells(13).Text.Substring(0, 6)
End If
End If
End Sub
I would like to implement the application where user can include the different CSS files when clicked on different buttons. how this can be achieved. I don't want to use the theme feature.
I am trying to change the CSS but I have noticed the ungly behaviour as follows:
When using mozilla i see the source code for page i see code for latest CSS. But its not getting downloaded/ tried using the tamper data request to download CSS is not getting sent. When I inspect the elements style is still the old file
I am using link button in li and when i click on link button its color not changing i have applied the css so when i click on some link only that link color must be white others must be black. Which is visited that must be only color changed others must be white.
View 6 RepliesIn a VS 2005 C# web app, I've implemented change monitoring, so that if the user clicks the Cancel button after having changed the value in one or more controls, they are presented with a dialog box in which to confirm that they really want to discard the unsaved changes. I've set up a utility class, which includes the code shown below. Each of my edit pages inherits from the utility class, and in each of their Page_Load() methods I include a call like this:
EstablishCancelConfirmation(btnCancel, "Data has changed - OK to cancel and discard changes?");
I would like to change the listview template on a button click event. for example if your in edittemplate i would like to switch to ItemTemplate.i am trying to do this because im writing my own custom update function for the list view. so after i successfully update the row, it doesn't switch back to the default view.
View 1 RepliesI'm using a searchoption on my website. (language = VB)
The user can choose a searchcriteria out of a dropdownlist (Artist name, Description, Price, Genre, Type) . If the user selects one of the options in the dropdownlist the correct textboxes are shown.
For example: if the user selects Price he gets two textboxes (one for the min price and one for the max price) if the user selects Artist Name he gets one textbox
The dropdownlist and the textboxes are put into an updatepanel. The searchbutton is outside the updatepanel.
Now for the problem:
If the user doesn't fill in a textbox and presses the searchbutton, the backcolor of that empty textbox should be turned red. The searchbutton is set as a trigger and the panel is updated on the buttonclick, but the colors don't show.
In the clickevent of the button I've said the following code:
If txtCriteria.text = "" then
txtCriteria.backcolor = Red
Else
txtCriteria.backcolor = White
End if
Quite a simple piece of code. This works if I remove the updatepanel from my page, but I'd like to keep the updatepanel because it's really nice :p.
Change selecteditem of ddl on click button
View 2 RepliesI have written a user control that captures some user input and has a Save button to save it to the DB. I use a repeater to render a number of these controls on the page - imagine a list of multiple choice questions with a Save button by each question.
I am loading the user control inside the repeater's ItemDataBound event like this (code simplified):
[code]....
The problem is that when the Save button is clicked, the page posts back, but lbnUpdate_Click is not called. The Page_Load event of the page itself is called however.
I should mention that the repeater is part of a user control, and that user control is loaded inside another user control (this is a DotNetNuke site which makes heavy use of user controls). The Save button link looks like this:
javascript:__doPostBack('dnn$ctr498$AssignmentsList$rptAssignments$ctl04$ctl00$lbnUpdate','')
1.how to implement whole row as selected in repeater..
2.Like gridview(when select button is clicked then color will b changed to row)..
How can I chage the defaultmode of a asp:formview ? I tried this below one but didn't work;
FormView1.DefaultMode = FormViewMode.Edit
My formview defaultmode is readonly and I wanted to change it to edit
To change particular value in a dropdownlist dynamicallyfor exampleif i have a value as Apple in dropdownlisti should chk if that particular values is present or not then dispaly it as "redfruit"
View 1 RepliesI am using a gridview contaning name and status as fields, all the names and status are fetched from the database.initially all the status value will be "0" in database once it is aproved it will be chaged to "1"
I want javascript prompt on selecting the gridview label=> "approve" i.e "0" as "do you want to approve??"
once it got selected the approve is changed as "Activated" once it is activated the value will be updated as "1" in database it cannot be changed further into approveIT CANNOT BE CHANGED FURTHER INTO APPROVE and no other action should me made once it is changed to "approved" i.e "1"
i have gridview in which i have a Image button with id (' ImageButton3 ') on click of which i want to hide that corresponding row , by first highlighting it by followed fadeIn effect ....
Here is code of gridview:
<asp:GridView ID="grid" runat="server" AutoGenerateColumns="False" CssClass="mGrid" ShowFooter="true"
AlternatingRowStyle-CssClass="altrow" DataKeyNames="productid" Width="100%" BorderWidth="0px"
AllowPaging="True" PagerStyle-HorizontalAlign="Center" PagerStyle-VerticalAlign="Middle">
<RowStyle Height="50px" />
[Code] ....
This is code for javascript:
<script type="text/javascript">
$(document).ready(function() {
$("[id*=ImageButton3]").live("click", function() {
$(this).closest("tr").hide();
return false;
});
});
</script>
But the code i am using only hide the row , i am not able to get the effects of fadeIn and highlighting ..
Also i want i know that am i using right code to hide gridview row ?
I am using a gridview containing name and status as fields, all the names and status are fetched from the database.initially all the status value will be "0" in database once it is approved it will be changed to "1"
I want javascript prompt on selecting the gridview label=> "approve" i.e "0" as "do you want to approve??"
once it got selected the approve is changed as "Activated" once it is activated the value will be updated as "1" in database IT CANNOT BE CHANGED FURTHER INTO APPROVE and no other action should me made once it is changed to "approved" i.e "1"