Very often i write code like:
<img class="hasMenu" src="<%= (Model.Image==null)?Url.Content("~/Content/NoImage.jpg"):Model.Image.standard %>"
alt="Main image" />
Is there any predefined function which could beauty this code? Something like: ValueOrDefault(Model.Image.standard,Url.Content("~/Content/NoImage.jpg"))
I have a dropdownlist on my view that is being populated from values in a database table and I've added a "--Select One--" header. Selecting a value from this list is optional (it maps to a nullable field in my table). Currently, if a user doesn't select a value from the ddl then it inserts an empty string into the field, wherease I'd prefer to keep it NULL.
View 5 RepliesI'm used to using VB.net for web programming.Often, I have something like:
Dim s as string = Session("s")
I get a string value for s from the web session. If there is no value in the web session, I get a blank string.However, AFAIK, in C#, I have to have something like the code below to do the same thing.
string s;
try { s = Session["s"].ToString(); }
catch { s = ""; }
have a form where I insert record via DetailView control. I have some string fields. For each string field (nvarchar in sql) I have defined the Default Value in the SQL SERVER (2008) as ''. Also I have added to each InsertParameter of the DetailsView a DefaultValue="".Yet still, if the user enters no value for one of the string fields, NULL is inserted into the table.
View 4 RepliesOn update the dropdown value shows NULL in database : here's structure for my gridview
<asp:TemplateField HeaderText="Construction Phase" SortExpression="Phase_Name">
<EditItemTemplate>
<asp:DropDownList ID="EditedDropDownInGrid" runat="server" CssClass="form-control" DataSourceID="PhaseSQLDataSource" DataTextField="pp_name" DataValueField="pp_id">
</asp:DropDownList>
</EditItemTemplate>
[Code] ....
It updates other controls in gridview but does not update my selected dropdowns item value in Integer format which is inside gridview...
exactly like cms , i want to create page programmatically with this options:1: page-name2: add template (master-page)and etc...
View 6 RepliesI need to force SSL when going to the final checkout page (for example from default.aspx to checkout.aspx).
I need to pass variables to this check out page and tried to use server.transfer(https://www.mydomain.com/checkout.aspx). I then use previous page .Fincontrol to read text box and label name to this check out page. If I only do the server.transfer("~/checkout.aspx") then my I can read all vakues of my controls from the passing default.aspx page.
But when I force https:// then I cannot read the control values from default.aspx page.
Please give me some tips on how to get control values to the https:// destination page or if you have another tips on how to do it the right way, please let me know.
I'm creating user controls that i will put into an update panel and make them visible only when required using triggers. Once visible it will float in a dialog box so it has a close button which will just hide the control on client side.
The controls have multiple post back states, like a wizard, i'm using a multi view control to accomplish that. My problem is that once the user is at step number two in the control, if the user closes the dialog, than opens the dialog again, (note that the control is made visible on the server and reloaded by updating the updatepanel) the second step will still be displayed. The reason is . because whenever there is a postback the control will load its state using the viewstate, even if EnableViewState is false it will still load it using the LoadControlState method. so my quesion is how can i force a user control to load fresh with its default values without any postback data.
i have a master page that has a an accordion and inside the accordion is a cscading dropdownlist and then a button... Basically you select the values from the dropdowns and the click the button to change the content form from default.aspx to history.aspx. This works fine the first time I do it with the exception that cascadiing ddl all reset and then if i populate again and clcik the button again I get the following error(below)... I know I can set enableEventValidation = false, but wondered why this is occuring and what effect setting it to false would have? The second part of the question would be how do I maintain the ddl values when the page changes from default to History.sapx? I am using the following for the button.
<asp:Button ID="btnNewRecord" runat="server" Text="New" PostBackUrl ="~/History.aspx" />
Event validation is enabled using <pages enableEventValidation="true"/> in configuration or <%@ Page EnableEventValidation="true"
%> in a page.
For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered them. If the data is valid and expected, use the ClientScriptManager.RegisterForEventValidation method in order to register the postback or callback data for validation.
I've got a few labels in a datalist that are being populated based on the values of a queryString but without the query string the datalist is empty.
How can I access the labels in the datalist and set a default value to them on the load of the page?
i am using a gridview in my web page,i used to bind the database records to the gridview..my columns are name,empid,company name,pl leave,sl leave,total leave taken here total leave taken is not a database fields,in the page i want to fill the records once loaded pl leave and sl leave is added and display in the total leave taken column..it working properly when all pl ans sl columns fill with numbers,if some pl and sl leave having blank values.it showing an error like input sting was not in correct format..this is my code
<Columns>
<asp:BoundField DataField="slno" HeaderText="SerialNo"
SortExpression="slno" />
<asp:BoundField DataField="ecode" HeaderText="Employee Code"
SortExpression="empcode" />
<asp:BoundField DataField="ename" HeaderText="Employee Name"
[code]....
Where can I find the default template used by EditorForModel? I'd like to use it as a starting point for customization. All I could find about it wasthis post from last year, but something must have changed since that was written because the Object.ascx template given doesn't work with client side validation.
View 2 RepliesIn a controller action function, we can add a create/edit/list/details view by right clicking. The content of aspx/ascx will be generated according to selected model.
my question is how to change the template in order to generate my customized create/edit/list/details view.
I'm playing around and created a new Web Form project and trying to make way with the default template. I've created the pages I need but trying to leverage the existing membership pages and ASPNETDB. I'm having trouble grasping how the asp pages are connecting to the database(and thus make my own changes). I cannot see any SQL syntax in the aspx pages or the code behind? I can tell the project is making use of the stored procedures but where is the actual connection configured or the command that is being run, for example when the "create" button is pressed on the CreateUserWizard control. Looking at the createUserWizrd I cannot see any adapters it might be using?
Perhaps my mindset is trying to apply, tableadapter and datasets way of working to asp controls. All the information and tutorials I'm looking at, seem to bypass the connection to the database and somehow there controls are 'taking care' of the I/O to the database. So if I wanted to add an additional field to the createwizard process, what do I need to do? Alter the db and the stored procedure, then?
So I've created a default Visual Studio project for a webservice and I invoked the HelloWorld method. What I get is indeed a "Hello World" string, but with some additional "crap" attached:
Code:
<style>
@namespace url(http://www.w3.org/1999/xhtml); [src="http://static.addtoany.com/buttons/share_save_256_24.png"] {display: none !important;} #a2apage_dropdown {display: none !important;} #socialBotAdd, .addthis_button, .addthis_toolbox.addthis_default_style, #addthis_link, [onclick="return addthis_sendto()"] {display: none !important;} #greet_block {display: none !important;} .meebo-00 {display: none !important;} #wibiyaToolbar, #wibiyaToolbar_window_template {display: none !important;}
</style>
Where is this stuff generated? And how can I remove this.
I have one page that I always want the anonymous template to be displayed regardless of whether or not the user is logged in.
View 4 RepliesI'm creating a custom templated composite control. If there is no 'ItemTemplate' specified in the mark-up, how do I create a default template programmatically?
View 1 RepliesI want to change the default formview generated template. I don't mean change the itemtemple on each page, I mean what VS generates when ever you databind the formview. I want to change it so it uses <label...>xxx</label> instead of xxx <asp....
View 2 Repliesi dont know how to set the field to blank field instead of null
if i insert record, and don't input some field, then the field will display null
how to remove null value by default in mysql db.
This is the connection string that gets generated with the "New ASP.Net Website" template in vs 2010
<connectionStrings>
<add name="ApplicationServices"
connectionString="data source=.SQLEXPRESS;Integrated Security=SSPI;AttachDBFilename=|DataDirectory|aspnetdb.mdf;User Instance=true"
providerName="System.Data.SqlClient" />
I have a named instance of sql 2008 developer edition installed. I have changed the Server name but the query string will still not work. I want to be able to use the default db "aspnetdb.mdf". I use Windows authentication to connect. How can i change the connection string to get this to work?
I tried using the the New ASP.NET Default Web Template in Visual Studio 2010 but one issue I'm encountering is with the CSS selected menu item and read apost which stated that...
"This screenshot demonstrates some of the styling options provided by the CSS, including the style for the selected About menu item"...In the screenshot the "About Us" menu item is highlighted but the page's content is the "Home" page content, not "About Us" page. My problem is...I can't get the selected item to be highlighted as in the screenshot even with fresh site using the built in template.
I have a typical gridview/formview master control setup. When I try to update or insert I don't get any errors but it also doesn't work. When I try to insert data all I get are null values and when I update, none of the values are updated. The formview looks like its working, but just doesn't. The primary key is an identity and it auto-increments by one.
[Code]....
I've got a details view control on a page. One of the columns, from the database table, is a bit field. It is not nullable, and that's the way it has to be. Also, in most cases, when inserting data, it will be true (1) be default. I've found in testing, when inserting data, that it was false, for some reason. So, I changed the column to a template field and went to the InsertItemTemplate for that column, and changed the checkbox Checked property to True, instead of the default False. However, it has really screwed up the page because now it won't save anything at all! When I try saving something using the details view, it does show the checkbox as being checked, but man, once I try saving it I get an error message back from the database saying that the column doesn't allow for nulls.
Huh??? How in heck can the column on the page have a value (it is checked), but when it goes to save something it fails? Furthermore, before I converted this field to a template field, it worked perfectly. I tested several other insertions, and they all worked. But when I converted it to a template field, it stopped working? What's that about? I even tried setting the default value for the Checked property of the checkbox back to False, but that still doesn't work, it still wants to pass in a null. What's going on here? Why is it that converting a field to a template field, which was working perfectly fine before I made the convension, stop it from working at all?
I've created a databound gridview inside the gridview's RowDataBound I use the RowSpan property to merge cells. The grid ends up looking like this for example....
Data Data Data Button
Data Data Button
Data Data Data Button
Data Data Button
Data Data Data Button
The button is generated using a Template Field and is a standard ASP:Button. If I click a button in an unmerged row everything works as expected. If I click a button in a merged row...the sender object on the command comes back as null and no matter what I try I can't seem to fix it or get a reference to the button.
sender.CommandArgument
for example returns and empty string.
is it possible to change the default date values accepted by sql server to dd,mm,yyyy instead of the default mm,dd,yyyy?
View 3 Replies