Forms Data Controls :: How To Produce A Blank Record In A Dropdownbox Control
Mar 30, 2011
I have a dropdown box control, populated by an Access data source, and linked to a form control which renders an appropriate record detail when a selection is made. All works as intended. My issue is that each rendering of the page shows the dropdown box carrying the link to the first record, with the detail portion of the page already complete with the information for that record.
I'd much prefer that the dropdown box would carry some text, like "Click to select..." leaving the detail part of the page empty at the first iteration of the page, allowing the user to pick the first record. I can't seem to find any way around this problem with the control or the data, unless I add a record at the top of the file that carries the text.
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Jun 1, 2010
I'm new to ASP.net 3.5 and trying to create a test site so I can figure out how to use it in the real world. I have created a FormView (Formview1) based on a Client table using Linq Data Sources. The page includes a DropDownList to lookup Clients. I have added a list option (<asp:ListOption value="" Text="(Select Client)" and set AppendDataBoundItems=true so my added option is displayed. I decided to try to use Formview with only the Edit and Insert Modes, and I have set the Default Mode = Insert. When you open the page, a blank Client record is displayed.
The Client record contains serveral lookup fields and they have drop down lists for each. When I select a client from the Client DropDownList, is get the following message 'ddlClientType' has a SelectedValue which is invalid because it does not exist in the list of items I had this problem before and decided the best way to handle this (in the interim) was to turn off foreign key constraints for each of the lookup fields (e.g. ClientType) in SQL Server. That worked for 2-3 days. Now the problem has started again.
When I develop in other applications, I would simply create a lookup data source based on a Union Query with the actual data and a blank record. How can you do this using Linq DataSources. Can you get access and modify the queries?
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Nov 4, 2010
I have this SQL in a non-working query:
SELECT Pub, Street, Neighborhood, RelativeAddress, Crawl FROM ListofPubs WHERE (Crawl = N'@ Crawl')
That doesn't allow me to choose an item from my DropDownBox. So, when I try to configure my DataSource, I can only hit Test Query or Finish; there is no option to choose. I have another query, slightly different; which updates a GrivView from a TextBox;
SELECT [Pub], [Street], [Neighborhood], [City], [State], [RelativeAddress], [Crawl] From [ListofPubs] WHERE ([Pub] Like @Pub + '%') ORDER BY Pub ASC
This query works perfect! When I hit Next, I can choose ParameterSource = Control and ControlID = TextBox1.
I just can't seem to get my first query to let me choose a control, similar to what the second query does. I must be missing a step. Can someone tell me what I'm doing wrong?
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Aug 22, 2010
I have a dropdownbox which I want to use to search records based on a timescale. The gridview populates results based from that search.
So here is how I want to work this;
If a user selects "today" - a list of records input today are populated. If "this week" is selected, a list of all records added within that week from todays date is populated.
I created a forum on this issue previously but to no avail whatsoever. How do I work around this problem?
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Feb 1, 2010
I currently have a gridview that is displaying tabular data from an sqldatasource that looks something like this:
[code]....
Since I have an unpredictable number of categories coming from the database, I would like to continue to use a single datasource with only one query to the database. There is no editing, it is simply for display purposes. What's the simplest way?
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Jul 23, 2010
I have a ListView control that only displays one record at a time. I have a LinqDataSource that can return one or more records. I have a function that determines the number of records and returns a psuedo random number between 1 and the number of records returned. When the page first loads, I want to display a random record. After that, I want the datapager to move the user normally through the records.
In my Page Load Event, if Page.IsPostBack is false, I get the random number. Let's say for simplicity I have 15 records and the randon number generated is 6. How do I tell the LinqDataSource to display the record at index 6?
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Jan 27, 2010
I have a search page. If a user enter something into title textbox and search let say it display 15 records.
If click the title of each records, it goes to DetailsPage.aspx.
What I want here is: If user click the title details of a record and leave that search page, I want to put there(On Details.aspx) Previous/Next button arrow so that the user does not need to browse back and see the search results and go to next details.
Note: I am passing ID into querystring when go search page to details page.
How to keep remembering IDs on details page of searched records on search.aspx ?? Use session or something different ? How can I do this ?
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Feb 20, 2011
I would like to ask if there is any control act like grid to display records.The 'datasource' will be a customed class, this dataclass has List<T>, so I will populate each element by iteration into the grid.Any control can I use to work like a grid?The number of records will around 100.This control should also allow the user to select a record.
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Jan 18, 2012
Have a gridview witha column that is read-only:
Code:
<asp:BoundField HeaderText="QTY" ReadOnly="True" DataField="qty">
<ItemStyle Width="150px" BackColor="LightGray" />
</asp:BoundField>
at the bottom of the grid I'm going to have a blank row to allow users to add a new record.
drow = dt.NewRow()
How do I make the new row column a dropdownlist?
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Sep 6, 2010
i have to make this form in my asp.net project [URL] so a tipical master/detail relation in the top of the form there a datepicker wich correspond to master table+ other controls like the customer the grid corespond to the details table (order details table) i want to add records to the details table in the client side and then send all the records in one operation to the server - the problem is how to get the correct primary key from the master table ? - how to insert details record in the client using a gridview control
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Jun 3, 2010
First of all, when using the GridView control with Delete enabled, when I delete a record is the event handler in the code behind file handled before the record is deleted or after? I need to obtain a counter value that I have set up in the record before it is deleted so that I can decrement all of the counter values that followed it. Is the best way to do this to open a connection in the Delete even handler and take care of it by code, or is there another way to access a column value from the GridView control that would simplify the process?
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Nov 21, 2010
I need to access a TextBox control inlistview. I have tried the following code behind but I don't retrieve the correct textbox. A snippet of the code is as follows:
<asp:ListView ID="CurrentAlertListView1" runat="server" ItemPlaceholderID="itemPlaceholder"
EnableViewState="false" EnableModelValidation="True" OnSelectedIndexChanged="CurrentAlertListView1_SelectedIndexChanged"
[code]...
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Jul 14, 2010
I want to insert some data into SQL Table.i'm using a form which contains one dropdownlistbox,four text boxes and one submit button.if i select a option in dropdownbox and entering somedata into the corresponding Textboxes and then clicking the submitbutton.it should inserted in to the correct table which one i have selected in the Dropdownbox option.
[Code]....
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Nov 16, 2010
I am using paging to my gridview (pagesize=4) . now i am in (X) page and i want to get (X+1) page top record or (X-1)page bottom record , how i can get .
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Mar 21, 2011
I have a delete button bellow my gridview and I want a pop up to show when no record is selected and tell the user to first select a record. The button click event would show the pop up, but my gridview data blanks out.
Here is my code:
[Code]....
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Oct 6, 2010
I want users to select a record in the GridView and then have that record open up in the Detailsview. How would I go about getting these two tools to communicate?
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Aug 13, 2010
i have design a web application having suppliers table using SqlDatasource..
i have a master page in my design and other form are bound to a context menu..
Now i have displayed the records in the gridview..all i wanted is after i select a record in the gridview it will display the selected record in detailview from another aspx form..
i was able to create the link to another aspx form but the data that it display is the first data from the gridview not the data that i select.
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Jul 6, 2010
i have one parent grid on which if user clicks a record ,the child details should get displayed on same page.
for example :
There is one department details table and employees table:
if user selects a record in department details grid,then employees in the selected department should get displayed in the next grid in the same page
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Sep 2, 2010
When I try to insert a record the Filing Date and Report Time fields are always blank in the database.
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May 7, 2015
I have a repeater control and a text box, and likewise a button to post data to database.after i insert the data to the database in thwe click event of the button, the datalist will not update the displayed content. at the end of the button's click even, i added the code line:
Response.Redirect(Request.RawUrl)
But still, the datalist will not update automatically. What do I do next?
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Jun 2, 2010
I have a form which a user can fill in x times with the data they want too. The form is posted to the following Action.
[HttpPost]
public ActionResult Manage(ProductOptionModel DataToAdd)
{
if (!ModelState.IsValid)
{
return View(DataToAdd);
}
var ProdServ = new ProductService();
if (DataToAdd.ID != 0)
{
//Edit Mode.
DataToAdd = ProdServ.EditProductOption(DataToAdd);
ViewData["Message"] = "Option Changes Made";
}else
{
//Add
DataToAdd = ProdServ.AddProductOption(DataToAdd);
ViewData["Message"] = "New Option Added";
}
var RetModel = new ProductOptionModel() {ProductID = DataToAdd.ProductID};
return View(RetModel);
}
So at the bottom I blank the model (Leaving just the required field) and then return to the view. However the view holds the data from the previously submitted form. I have debugged the code and checked that the RetModel variable is empty.
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Jan 26, 2011
I have one SqlDataSource control as DataSet with enable caching in one page aspx. Filtering is applied to this SqlDataSource control, so that the page always returns one record data.
My question: How to get the record data value from SqlDataSource control (one record data value) and store it as String variable?
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Apr 27, 2016
How to Call a record on datalist by button click and display record on formview in model using Username
Here is what i tried
<asp:DataList ID="GetMergedAll." runat="server">
<asp:Label ID="Name" runat="server" Text="Label"></asp:Label>
<asp:Label ID="Post" runat="server" Text="Label"></asp:Label>
<asp:LinkButton ID="LinkButton6" runat="server">LinkButton</asp:LinkButton>
</asp:DataList>
protected void Page_Load(object sender, EventArgs e)
[Code] ....
HTML
model here
<asp:FormView ID="Post" runat="server">
<asp:Label ID="Name" runat="server" Text="Label"></asp:Label>
<asp:Label ID="Post" runat="server" Text="Label"></asp:Label>
</asp:FormView>
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Jul 16, 2010
is it possible to insert a blank row in gridview when for example a varible changes then there is a blank row then then continues for Eg
Hearders "item" "batch number" "price"
rows apple 1 $1
apple 1 $1
(blank row)
orange 2 $1
is it possible ? & how....fml gridviews
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Aug 14, 2010
Very new to C# although I have alot of older coding experience. Not much object orientated programming though. Anyways, I have a .net program I'm working on, basically to work on my skills although it will prove to be useful. I am keeping track of my work schedule. Currently, I am populating a datagridview from a sql 2008 express db. My columns are: date worked, hours, paid, and paidon. What I want to do is add an empty row whenever the date corresponds to a date that is "Monday". My goal is to line break every week. So that each work week (Mon-Sun) is seperated by a blank row. I would rather not actually have this blank row in the database. I would like the gridview to do this on the fly. Here is my gridview code in my default.aspx file:
[Code]....
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