Web Forms :: Changing A Control Attribute At Runtime?
Oct 19, 2010
I'm basically trying to get a div containing a loading gif to show on my page at runtime. I call it from a button click event as well as in the code flow. It was working before I used the AJAX Update Panels. I've since taken them out as they were causing issues with RegisterClientScriptBlock. By the way, does commenting out the AJAX Markup like this...
[Code]....
...remove them from influence?
[Code]....
My code is initiated from the button click event.
[Code]....
The code that does the work goes like this...
[Code]....
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Feb 1, 2011
I created a simple Master Page in Visual Studio 2008:
<%@
Master
Language="VB"
CodeFile="MasterPage.master.vb"
Inherits="MasterPage" %>
<!DOCTYPE
html
PUBLIC
"-//W3C//DTD XHTML 1.0 Transitional//EN"
and got green underlined 'Master' with two warning messages: 1.Validation (ASP.NET): This attribute name must be followed byan equal (=) sign and a value. If the value is in quotation marks, the quotation marks must match. 2. Validation (ASP.NET): Attribute 'Master' is not a valid attribute of element 'Control'.How I can get rid of the messages?
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Aug 15, 2010
I have a site map on my project and I have section which get values from sql database and it changes according to querystring Id value. In my sitemap the title of the page is everytime same. but I want tpo change it at runtime. I am using multiple sitemaps and My sitemap is not the default one. its name is rootSitemap. I tried some code which I got from msdn but it seems doesn't work for me;
[Code]....
Here is my sitemappath code which is situated in my master page;
<asp:SiteMapPath SiteMapProvider="rootSitemap" ID="SiteMapPath1" runat="server"></asp:SiteMapPath>
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Feb 2, 2010
There is a page in my project named Messages.aspx that shows the messages received [but obviously], using the ListView control.
I want that the user should be able to see the body of the message on the same page [Messages.aspx] just by clicking the subject of the message, which is ofcourse a link.[Messages.aspx?msg_id=some_id]. Hence the user would actually reload the same page to read the contents of the message.
Now what I want is that I should be able to write some code that would change the <LayoutTemplate> and the <ItemTemplate> of the listview during the runtime. [in the page_load event of course]
Previously the listview would look like this:
[Code]....
After the clicks any message to read it and the page gets loaded, I want the layout of the listview to look like this.
[Code]....
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Mar 30, 2011
In each projects we have several pages which have the following tag
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
Now we would like to change those to (about 80% of Pages)
<asp:ScriptManager ID="ScriptManager1" EnableScriptGlobalization="true" EnableScriptLocalization="true" runat="server">
</asp:ScriptManager>
Is there any way to do that from a single source like Web.config or Global.asax or using any HTTPHandler.
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Sep 22, 2010
hw can i give write permission to folder for changing the image at runtime.i have tried so many times but still confused and free hand. can some one pls give me the solution in details.
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Jan 17, 2010
I'm building a custom web control with a public property which I only want to be available in design time (i.e. make it unavailable in code behind). The DesignOnly attribute promises to do just that, but when I set [DesignOnly(true)] it has no noticeable effect whatsoever:
[Bindable(true)]
[Category("Appearance")]
[DefaultValue(null)]
[Localizable(false)]
[DesignOnly(true)]
public string MyProp
{
get
{
return ViewState["MyProp"] as string;
}
set
{
ViewState["MyProp"] = value;
}
}
The property still appears in code behind IntelliSense. Setting a value to it in code behind works. In these respects, the behavior is just as if the attribute had never been set. And I've cleaned and rebuilt the complete solution. Twice.
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Jan 17, 2010
suppose that i have a gridview and an objectdatasource in my webform
with that i want to include several search criteria
the problem is that i want theme dynamic
for example
i have a dropdownlit with customers list
the first item in the dropdownlist is "All customers" for example
if i select it no "customer select parameter" is created
otherwise i have a "customer select parameter" for the objectdatasource and it's value is the dropdownlist.selectedvalue
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Nov 14, 2013
i have a dropdownlist contaning years..now i want to connect my database by dropdown selection.if i select 2013 it will connect 2013 database ,if i select 2014 it connect 2014 so on..
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Jun 21, 2010
Recently, I wrote code that dynamically builds a menu / navbar for my site that uses Reflection upon the [Authorize(Roles="")] attribute to determine what Controllers and ActionMethods should be shown to the user. And it came out really well. See this post for the details on how I did it: [URL]
The next step that I've been thinking about is when the user clicks on the "Controller" listing, it takes the user to the Index page. (eg. [URL] ) Which is perfectly fine, but I was thinking that it would be nice to also have this Index page for each controller dynamically constructed based on the user's roles / permissions. For example, if the Index page from XYZ-Controller might look like:
XYZ-Controller Index
SomeMethod1 -- This method tweaks your widgets
SomeMethod2 -- This method unwinds your widgets, re-orders thems, and then re-winds them, but only on Tuesdays.
SomeMethod3 -- This method will delete some or all of your widgets and then you'll be sad.
I currently use Reflection to iterate thru all my Controllers and all the ActionMethods in each controller. I've been pondering the best way to store the Description of each ActionMethod. (Like, "This method tweaks your widgets.") Do I make my own Attribute called, say, Description which I would use to decorate ActionMethods with. For example it might look like this: [Description("This method tweaks your widgets")]
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Oct 15, 2010
<asp:Image id="voteaccepeted"
ImageUrl="~/UserControls/Vote/Images/before_accept.png"
runat="server" class="vote-accept" />
i want to change image url during run time
if( bestanswer == true)
{
// change url..
}
how i do it.
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Jun 8, 2010
I have a website that goes out to multiple clients. Sometimes a client will insist on minor changes. For reasons beyond my control, I have to comply no matter how minor the request. Usually this isn't a problem, I would just create a client specific version of the user control or page and overwrite the default one during build time or make a configuration setting to handle it.
Now that I am localizing the site, I'm curious about the best way to go about making minor wording changes.
Lets say I have a resource file called Resources.resx that has 300 resources in it. It has a resource called Continue. English value is "Continue", the French value is "Continuez".
Now one client, for whatever reason, wants it to say "Next" and "Après" and the others want to keep it the same. What is the best way to accomodate a request like this? (This is just a simple example).
The only two ways I can think of is to
Create another Resources.resx specific to the client, and replace the .dll during build time. Since I'd be completely replacing the dll, the new resource file would have to contain all 300 strings. The obvious problem being that I now have 2 resource files, each with 300 strings to maintain. Create a custom user control/page and change it to use a custom resource file. e.g. SignIn.ascx would be replaced during the build and it would pull its resources from ClientName.resx instead of Resources.resx.
Are there any other things I could try? Is there any way to change it so that the application will always look in a ClientResources.resx file for the overridden values before actually look at the specified resource file?
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Jul 9, 2010
I'm starting with asp.net MVC 2. Very cool.I have been reading about the data annotations validation attributes that can be set on the view model properties.It's cool but I have a scenario where I need to determine at runtime whether one of the property is required or not.How can I achieve this ? I want to have client side validation enabled too.
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Jul 24, 2010
I started out with the following code which worked fine, no problems:
[Code]....
I've since expanded the above so that it uses different providers according to the current logged in user. Here's the code since my changes:
[Code]....
I'm not getting any error messages but when I view the web page in the browser, it is stuck in a continuous loop where the page displays (correctly), then posts back to the server and displays again.
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Aug 25, 2010
I'm using one application but have multiple providers in my web.config for memberships, roles and profiles to allow my application to be used by different groups of users who need to connect to different databases.
This means I'm having to change the membership, role and profile providers on-the-fly in my code-behind files. So far I've taken care of the membership and roles a bit like this:
[Code]....
However, I'm having trouble finding out how to do the same sort of thing for Profiles. I've looked at ProfileProvider and ProfileManager but I can't work it out how to access my the profile property that I've created in my web.config file called "ScreenSize". Normally you would just write Profile.ScreenSize to read or write to the property.
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Jul 23, 2010
I have a GridView bound to a SqlDataSource with a default SelectCommand defined as such:
<asp:SqlDataSource ID="SqlDataSource1" runat="server" DataSourceMode="DataSet"
ConnectionString="<%$ ConnectionStrings:MyConn %>"
ProviderName="MySql.Data.MySqlClient"
SelectCommand="select * from blah blah" />
There are cases where I have to change this query dynamically at runtime, so I do the following:
SqlDataSource1.SelectCommand = sql; // 'sql' is the new query
GridView1.PageIndex = 0;
GridView1.EditIndex = -1;
GridView1.SelectedIndex = -1;
GridView1.DataBind();
updatePanel.Update();
This works just fine actually, but when I click the pagination controls, the result set defaults back to the SelectCommand defined in the SqlDataSource1.
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May 3, 2010
When changing the textbox's text mode to multiline the textbox becomes resizable during runtime. I can't seem to find the property to disable this, does anyone know how I can resolve this issue?
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Mar 31, 2011
<asp:GridView ID="GridView1" runat="server">
<Columns>
<asp:TemplateField>
<ItemTemplate>
<asp:TextBox ID="TextBox1" onchange="calculate()" runat="server" Text="0"></asp:TextBox>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
I'm getting this error on the above markup: Message 1 Validation (ASP.Net): Attribute 'onchange' is not a valid attribute of element 'TextBox'.
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Mar 17, 2011
I have a problem with my web site 1stSigBdeAssn.org. I have made no changes to the site but I now get the following error message:
Parser Error Message:
Unrecognized attribute 'targetFramework'. Note that attribute names are case-sensitive.
Source Error:
[code]....
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Jul 6, 2010
I'm trying to add an attribute to the day link on a calendar control. I can apply attribute to the cell but not the <a> object within the day cell.
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Mar 29, 2010
I have got a composite control and i would like to dictate which attribute/property is assigned to the control first from the markup?example in the aspx file:
<MM:MyControl ID="" runat="server" ViewType="normal" BaseType="RealBase"></MM:MyControl>
when the control gets created from the mark-up above, ViewType will be assigned first, Which is what I do not want, I would like RealBase to be assigned first under all circumstances. This control is to be users by other developers so I cannot just switch the order.
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Mar 19, 2013
I am using repeater control and in that i am having div in item template. Now I am setting its id using eval. I want to access this div in item databound for that i am making it runat=server. But in doing so I am getting :
"The ID property of a control can only be set using the ID attribute in the tag and a simple value."
<div id="<%# Eval("RENTER_ID") %>" style="display:none"></div>
How to achieve this functionality. One more thing i am using master page and repeater is in content page.
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Feb 22, 2011
I have a web form with an Asp.net PlaceHolder control. By default the control is set to visible false and will be displayed through the code behind based on several criteria. In general this PlaceHolder control wraps several other Asp.net controls. Now a new requirement ask that the controls within the PlaceHolder control be visible at all times an no longer hidden. So in the Aspx code I changed the laceHolder attribute and set it to visible. Now all kinds of Java Script validation errors are occuring and it is a horrible spahgetti code nightmare. Is their a way to set the visible attribute on the control and not have it trigger the validation?
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Jan 17, 2011
How do I do something like the following:
[Code]....
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Jul 30, 2010
[Code]....
I am having a problem setting the SystemObjectRecordID attribute of my custom control inside a repeater. Currently, the value winds up as zero in the database. Things I have checked:
1) The datatype of the DB column (bigint) and the datatype of AlertId (long) and the datatype of the getter/setter SystemObjectRecordID variable (long) match.
2) If I set '<%# ((Alert)Container.DataItem).AlertId %>' to the Text attribute of a label I get the expected results. So, it has something to do with my custom control and specifically how data isbound to the SystemObjectRecordID attribute.
Now, going to the server, below is what I have for databinding (The page is Default.aspx.cs and the namespace is Company.ProjectWeb.Profiles):
[Code]....
Currently I am trying to pass the value received from a literal (because I know that the values are received as expected here) to the SystemObjectRecordId object. Still isn't working. I am still getting a value of zero when I set a breakpoint and look at the value of SystemObjectRecordId in the codebehind of my control:
[Code]....
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