I have asp.net page which having the drop down control with Product list. in database my Product Table has fields as ProductId, Product Name and Price. where as I have filled this drop down control by this method:
Which is working perfect. But i want to get selected product Price value on client side. for that I don't want round trip at server to get that. is any property of dropdown control other than DataTextFeild Or DataValueField to hold the Price Field of product ? so that i would avoid to go back at server. Or suggest any remedy for the same.
I Have the gridview control with 2 dropdown list and 2 text boxes,When the textbox chnaged event happen 1 row will create and the dropdown back to initial values( its not retaining the selected values),I am binding the control after text changed method,Is there any properties needs to be set or any other way we can retain the values in postbacks?
I have this SQL Select statement to select the basket id where the user id equals a specific ID.I want to store the result of the query in a variable, so I thought I could have done:
BasketPage.SelectCommand="SELECT BasketID FROM tblBasket WHERE (UserID = '9f96bd94-91b9-4328-8214-4eac179c3a26')" var BasketID = BasketPage.ExecuteScalar().ToString();
But apparently I need to create a new instance of an SQL Command for it to work, how can I do this for the BasketPage Select Command?
I was looking to build an application with the scenario:
1. The application is a Shared PowerPoint Presentation
2. There would be 2 users for the application, Admin and Client
3. Admin can upload presentations
4. Only Admin can control the flow of presentation and cLient can just see the changes
5. As-In Admin can select next slide or previous slide and correspondingly Client configuration changes
I was thinking of updating current values in Database and using AJAX for updates on Client end. But I want a notification kinda thing that would notify the Client as soon as the Admin changes slides.
I am using ajax.beginform. i am inserting and updating records using ajax and showing the inserted or updated value in the div above the div containing form. I need to apply validtion on these values.what is the recomended validation framework for this scenario. i have problems pushing validation messages to the form as i can only update one div that is indicated in updatetargetid parameter of ajax.beginform and this value in my case is set to div displaying the updated/inserted data
i'm new with design patterns and i'm not sure if in this situation i can use a composite pattern.
The scenario is a web application for an address book : the address book cointains AddressBoookItem, generalization for Contact and ContactGroup. The last one is the composite object containing a collection of AddressBoookItem.
With these scenario i'm sure that this is a composite pattern, but what is confusing me is that a contact may belong to many contactgroup. Does this request change the situation? Till now i thought that between the Leaf object and the Composite (in the composite pattern) there was a 1-to-m relationship (a composite may contains many leaf but a leaf is contained in only one composite object). Can i still use the composite pattern ? And, the last question,
How could i represent my scenario in a relational database? One table for the entire hierarchy or two table (Contact and ContactGroup) with a m:n relationship between them ?
How can I maintain using data annotation attributes for validations in mvc3 different requirement for edit and create in an elegant manner. I have an different edit and create requirement.
I want to track equipment between three types of allocations. A piece of equipment can be allocated to an employee, to a customer facility or to a warehouse.
I have an equipment table, employee table, a customer table and warehouse table. Warehouse is where equipment is temporarily held and shared between multiple employees, it is a holding area.
Obviously each equipment item can only be allocated to one employee, customer or warehouse.
My original thinking was to make a table for EquipmentAllocations where it linked the EquipmentID and the id of the employee, customer or warehouse (all guids).
Eventually I will need to query the equipment to see where it is located/allocated. I will also need to query the employees to check what equipment is allocated to them.
I am trying to figure out the best way to handle this and I am looking for some guidance. I am sure many of you have had situations similar to this that you could draw upon to offer up some advice.
SaveChanges can generate an UpdateException when an object added to the ObjectContext cannot be successfully created in the data source. This can happen if a row with the foreign key specified by the relationship already exists. When this occurs, you cannot use Refresh to update the added object in the object context. Instead, reload the object with a value of OverwriteChanges for MergeOption.
In a table, a foreign key column can have a single value multiple times. e.g. DepartmentID foreign key in Users Table: More than one User can have same DepartmentID foreign key.
I have two List's that contain a object of Tag like List<Tag> i need to find excluded and included to do an update operation how do find the difference in them both since they contain a Tag object. Can you use Contains function with a Tag object inside the list.
I have created a great stand-alone web form in asp.net utilizing many jQuery features and CSS. It works fine. When I re-create it as a web content form as part of a MasterPage, my jQuery and javascript is completely ignored.
I am referencing the pertinent jQuery and CSS in my of the MasterPage. I have a content placeholder at the bottom of the masterpage called "ScriptContent". In my content page, this is where I plug in the various jQuery methods and javascript.
When I view the page source everything is there. However, it's all being ignored so to speak. What am I doing wrong?
I am using ASP.NET MVC with jquery. I have the following MVC Action that returns a partial page on Success. On Application Error, I am not sure what to send it for correctly handling it at the client side.
Following is my jquery ajax call. Notice that I am checking for the data length to make sure there are no errors. Please suggest me a better way of doing this.
I have a question about model binding. Imagine you have an existing database entity displayed in a form and you'd like to edit some details, some properties eg createddate etc are not bound to the form, during model binding, these properties are not assigned to the model as they are not on the http post data or querystrong etc, hence their properties are null. In my controller method for update , Id just like to do
public ActionResult Update( Entity ent) { //Save changes to db }
but as some properties are null in ent, they override the existing database fields which are not part of the form post data, What is the correct way to handle this? Ive tried hidden fields to hold the data, but model binding does not seem to assign hidden fields to the model.
I have managed to place a dropdown control iniside a gridview control. The dropdown does indeed populate in each row... Question: How is it possible for the system to correctly select the text in the dropdown based on the value of the field which is driven from the database? Is it to do with the selectedvalue?
I'm trying to setup a page that will utilize a dropdown list control inside of a grid view control using VS 2005 2.0 version. Everything that I can find online seems to only show the use of the dropdown list control using a data grid. I don't want to use a data grid because it doesn't have the functionality/ power as the grid view control. how I can incorporate a dropdown list control with the grid view control? Here is a copy of my code.
I have seen a particular pattern a few times over the last few years. In the UI, each new record (e.g., new customers details) is stored on the form without saving to database. This clearly has been done so not clutter the database or cause unnecessary database hits.
While in the UI state, these objects are identified using a Guid. When these are a saved to the database, their associated Guids are not stored. Instead, they are assigned a database Int as their primary key.
The form can cope with a mixure of retrieved items from the database (using Int) as well as those that have not yet been committed (using Guid).
When inspecting the form (using Firebug) to see which key was used, we found a two part delimited combined key had been used. The first part is a guid (an empty guid if drawn from the database) and the second part is the integer (zero is stored if it is not drawn from the database). As one part of the combined key will always uniquely identify a record, it works rather well.
I have grid view control that includes a dropdown control in a template field.I wish to execute some code when the value is changed in the dropdown list. Can't figure out how to capture this event though?
I am using AJAX ComboBox control (or I can use simple ASP.NET DropDown Control it does not matter) in my form. What I do is, I bind combo box control to my database and retrieve client names:
[Code]....
But here is the problem. I want First and Last names to go into separate TextBox controls (txtFirstName and txtLastName). Now it inserts Last Name and Firts Name in txtLastName control. At the same time I would really like to keep LastName + FirstName together in Combo Box.
I have a formview with an insert item template. I have added two dropdown controls that are databound to two different database tables to this insert template. However, when I click the 'InsertQuery' for the Accessdatasource neither of these controls are available as 'Parameter source options'.Out of interest, if I take these dropdown controls out of the formview and put them on the page they then become available to use.
almost typical master-detail scenario except the 'detail' data I want to display below the gridview will be coming from both the table that is bound to the gridview (master) and a related table.
simplified example: tableMain with field1, field2, field3 bound to master gridview. I need to select a row from the master gridview and have a form display below with field4 and field5 from tableMain, as well as all fields of tableDetail where field1 of tableMain equals field1 of tableDetail.
Is this what a 'formview' control is for? or do I just arrange my own controls to accommodate the data? Would a formview work considering my source will be partially from both the main table and the detail table? This is one of the scenarios were I know I could come up with something using none of the databound controls (except the master gridview), but I want to use the controls provided when it makes sense to do so, and utilize their benefits etc...
I've created details masters before but can't remember what links the two together. When an item is selected with a master, such as a gridview, what is used to tell the details view which record to display? Is it the DataKeyNames property?
