Linq To Sql - 4.0 Dynamic Data Generating Search Or Filtering For Each Columns?
Aug 3, 2010
I am using dynamic data entities linq to sql project. For my test project I have one table, with 10 columns and a single primary key for example. Almost all the columns are varchars.I can get the basic project up and running fine - update, delete, insert etc.ince it has no foreign keys, there are no search filters rendered. I was wondering if there was an easy way to generate a set of filters for the columns for this table. So a First name and last name search box. Is there a way to generate these filters for chosen columns and is there a way to generate these for all the columns
for example, above each of the columns in the grid there might be a text box ( I am not too fussed where the text boxes are rendered as such). Each of the text boxes will act as a filter for that column (doing a SQL 'like')
Initially, I wrote the GetTeamMember() method to display the FullName in the ItemTemplate.
Then as I wrote the EditTemplate, I needed to populate a DropDownList with a list of names (first and last). It was fairly easy using the LinqDataSource, however it currently only shows the LastName. I could write another method GetTeamMembers() to populate the ddlTeamMember with the data I want, but I thought maybe there's a better "LINQ" way.
So I'm looking for a better way to get FullName (i.e. Firstname + " " + LastName) into both lblTeamMember and ddlTeamMember.
Options I thought of are:
I could write a method GetTeamMembers() I write a StoredProc that returns the extra column Better way?
I have two text boxes for the user to enter UserName & First Name, both these fields are optional and not mandatory to fill.
once the user presses the Search button, i execute the following query to fetch matching records.
[Code]....
The problem is, in cases where User leaves both the textbox or one of the textbox empty/blank, in that case that particular field should be removed from where clause.
More like if something is entered then search for that particular record otherwise search for all the records.
DBSearchDataContext db = new DBSearchDataContext(); object q = from b in db.Articles where b.Tags.Contains(val) | b.NewsTitle.Contains(val) | b.EnglishContent.Contains(val) select b;
I cannot exclude results where category = video or photos. H to exclude category where value is "videos" or "Photographs"
I have a gridview that holds a bunch of companies (600 of them). I have a textbox under the gridview so people could type in a partial name of the company and basically do a search on the gridview. My problem is that when I run the page the only thing that shows is my search textbox, I'm assuming this is because I have setup the SQLDataSource to filter based on this textbox. I'd like the grid to be filled when the user opens the page and only filtered when the user type something in the textbox and hits go. Does anyone have an example of that in VB that I could look at?
I created a gridview that is made up of 4 gridviews and using a stored procedure to populate it. I create columns at runtime because the number of columns changes all the time.To make the grids editable I am adding template fields at runtime as I create the columns, this is to ensure that a user is able to edit the cells and some foot values update. Reason why I have four grids is to freeze rows and columns like in excel using javascript. The problem is that performance is very bad especially in IE, the grids take a long time to load. I am not sure if this is caused by the data load or the creation of text boxes. see some of the code below for my _aspx page:
I am displaying the output of a LINQ query in a Detailsview control. I have a Detailsview called DetailsCaAb and a DropDownList called DropDownList2, when the use makes a selection from DropDownList2 the Linq query fetches the data CatAbstract from the table CatagoryTables. e.g.
[code]....
Unfortunately I cannot seem to control what is displayed by the DetailsView, I only want to display CatAbstract, but the details view generates another column called Items. How do I ensure only the data I want is displayed? I need a way of controlling the columns generated programmatically.
I have just added the Dynamic Data Filtering library to an Entity Framework based Dynamic Data web application, but on trying to access List.aspx, I get the following error. Is there anything I can do about this on .NET 4?The method 'Skip' is only supported for sorted input in LINQ to Entities. The method 'OrderBy' must be called before the method 'Skip'.
I have an entity set of NotificationTemplates, and each one of these has a collection of zero-many SmsTemplate entities. When editing or viewing a NotificationTemplate, I have a link to View SMS Templates. That link takes me to a List view for the SmsTemplates entity set, filtered for the NotificationTemplate I was viewing.
How can I prevent the user changing this filter to show SmsTemplates for another NotificationTemplate? That is, I want the filter, but it must be read only. The drop-down just mustn't drop down, it must just display the name of the NotificationTemplate that these SmsTemplates belong to. To view SmsTemplates for another NotificationTemplate, the user must click View SMS Templates from that other template.
The gist of the problem is that we have an alumni table (one record per person) and also a couple of other tables (one to many) that have degree info and interest info. In a search screen in our app you can search for criteria that spans all three tables (there are actually more fields and tables than shown in the example below but I am trying to keep it simple).
The code below works (properly returns people without degrees for example) but still feels a little clunky or over-engineered to me. Are there easier ways to do this? NOTE: I have been through quite a few iterations/approaches to making the correct data be returned.
i want to know as how to search or filter records in a gridview dynamically based on the character(s) entered on a textbox. What is the best way to achieve this?
I want it search @genre (selected Item from dropdownlist) in two columns :
 WHERE (Name IS NOT NULL)and(Genre=@Genre or @Genre=N'انتخاب ژانر')and(Daste=@Daste or @Daste=N'دسته بندی')and(Finished=@Genre or @Genre=N'انتخاب ژانر') but when I click button to show result it doesn't work I mean it doesn't show any thing in gridview but when I delete this code
(Finished=@Genre or @Genre=N'انتخاب ژانر')
It works correctly but I want it search to column when I select Item from Dropdownlist...
I have 2 tables t1 and t2. In t1 I have 4 columns from that I want to insert only 2 columns to another table t2. I only want to send data which is in the form of IP address like (123.123.123.123). After eliminating nulls and other data.
I have a standard gridview, with the standard paging and sorting interface enabled.The application holds appointments for three organisational units, with a maximum of 3000 appointment records being returned across all three units. The appointment records are quite small.
The choice I am faced with is to:
1. Have an Org Unit dropdown which returns to the datasource on change of selection and at inital databind, and returns appointment records for one org unit at a time i.e. approx 1000 records.
2. Have the objectdatasource return all 3000 appointment records for all org units at initial databind, and filter the objectdatasource by org unit on change of selection, thereby saving a trip to the datasource.
I guess the question boils down to identifying the point at which querying the datasource by org unit is more efficient than filtering the records returned by org unit.
Is 3000 records a lot for a gridview to be paging and sorting etc.
I Have a table containing columns Address1,Address2,Address3,State,City and Area.Now i want to apply search Location where there will be a single textbox where the user can enter multiple strings seperated by spaces and then those rows should be fetched which contains all these strings entered by the user (implementing AND Case). For which the search on rows should be applied by merging the data of all the above mentioned columns and then searched.How to implement the above case?
I want to search record based on  Name, ID, Date, Report Type. from same table with one textbox. I can do search with one column how can do it with multiple column ...
protected void Button2_Click(object sender, EventArgs e) { DateTime dt = Convert.ToDateTime(TextBox1.Text); SqlCommand cmd = new SqlCommand("SELECT * FROM Transactions where report_type = @report_type "); cmd.Connection = con;
I have a ASP.NET (VB) Dynamic Data Project in ASP.NET 4.0. It works great - and offers filtering - but now I want to add searching to it. What is the best way to accomplish this in ASP.NET 4.0? Is there any built-in functionality for performing searches declaratively?
In javascript I have an image which I set the .src at runtime in javascript. The .src points to a asp.net page with a few values as querystring parameteres that I want t capture on the server. this page has empty content. In code behind in the page load I need to generate the smallest image possible and return it as the response. how do I generate a small image and return it in the response?
How to dynamically assign a datasource  to a DataList ?????????
For example suppose that we want to fetch data from the database table accordingly user interest and then bind the data to DataList Control........... How to do that?
I am Getting following Error while generating Dynamic Ajaxtoolkit Tab Container. During First Time Page Loading, it Works fine. when any Postbacks Occurs it shows this Error
[Code]....
Server Error in '/' Application. Specified argument was out of the range of valid values.Parameter name: index Exception Details: System.ArgumentOutOfRangeException: Specified argument was out of the range of valid values.Parameter name: indexSource Error:
[Code]....
Stack Trace:
[Code]....
[ArgumentOutOfRangeException: Specified argument was out of the range of valid values.Parameter name: index] System.Web.UI.ControlCollection.get_Item(Int32 index) +8665582 AjaxControlToolkit.TabPanelCollection.get_Item(Int32 index) +81 AjaxControlToolkit.TabContainer.LoadClientState(String clientState) +339 AjaxControlToolkit.ScriptControlBase.LoadPostData(String postDataKey, NameValueCollection postCollection) +181 AjaxControlToolkit.TabContainer.LoadPostData(String postDataKey, NameValueCollection postCollection) +110 AjaxControlToolkit.ScriptControlBase.System.Web.UI.IPostBackDataHandler.LoadPostData(String postDataKey, NameValueCollection postCollection) +74 System.Web.UI.Page.ProcessPostData(NameValueCollection postData, Boolean fBeforeLoad) +693 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1743
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
