C# - Dynamically Adding Text Fields On C# 2008 Page?
Feb 24, 2010
My C# web app requires the user to enter automobile information. The user can add information for one auto, or more (max 20).
My page has these text fields: Car Number, Car Make, Car Year, Mileage, VIN I have a button that allows the user to "Add More Cars" is to allow the user to add more than one car.
When the user clicks "Add More Cars", how can I dynamically display the text boxes, and keep track of how many cars the user has added (in order to load them to an array and write to database)
I am working on an application, where a user will enter their primary information (Name, Address, Email, Phone etc), then enter their automobile information (usually a fleet of automobiles).
My web page currently has one row of text boxes (Car Make, Year, Model, VIN, Mileage, License Plate)
Below this is a button called "Add More Cars"
What I am trying to do here is allow the user to add more cars if they have more than one that needs to be registered.
My problem is how do I do this dynamically?
2nd problem, how do I collect the data entered by the user (for all cars), to be able to write them to the database?
I am adding text fields to a page from the database. I set the .ID to match the record ID from the database. Of course becasue the text field is on the masterpage, when I grab the .ClientID, it is ctl00 contentMain$ctl00. what I don't get is where is my ID? If I set it to say AB how do I find the textbox by AB? I thought it should have AB in the ID somewhere. ID is nothing which I don't get either. I'm looping through the controls in a placeholder like this
For Each row In dtData.Rows() Dim c As Control For Each c In phTextRequired.Controls If c.UniqueID = row("CustomFieldID").ToString() Then
Again though what is in the row() is say AB but the id is way off from that.
my requirement is i want to add education details having three fields
1) name of school 2)name of city 3)Degree
some persons will studied only in one school . some in 2 . aome in 3. how to add dynamically .and after that i want to show the data to admin .if there is 2 means i want to display 2 school informa
Similar to the "add more experience" functionality in [URL], I want to provide a "Add another location" link which should display an additional row of a set of 4 dropdowns (country, state, city, region). I'm actually using the CascadingDropDown jQuery Plugin for ASP.NET MVC [URL] for my location dropdown functionality, but I need to give the user the ability to add multiple locations. What would be the easiest way to handle this in ASP.NET MVC and jQuery?
What's the best way to approach the following situation in asp.net mvc2 (c#):I have a form where a user can add more fields ... for example I ask user the details of personal computing devices that they have. For simplicity sake let's say I ask for the brand and type (dropdown list of Desktop/Laptop/Tablet/Other) and they can provide unlimited devices. I will start with a pair of text boxes:
And then as user click the "Add more device" button I will display another pair of Brand and Type text boxes ... and so on.My question is how should I use HTML helper for this, how I construct the viewModel, etc.I am from PHP background and I used to use the following in PHP:
<input type="text" name="brand[]" />
which on the back end will give me an array of brands ... not sure if that's doable in asp.net environment. I would appreciate any input.[I added the following lines to make my question clearer] I think I have not been very clear with my question.Suppose I have the following viewmodel:
public class UserRegisterViewModel { public string DeviceBrand { get; set; }
I have seen code for adding columns at runtime but here is another scenario for you. I am using a SQLDatasource control for my gridview. And the data returned can have different columns based on the filter meaning one time I may have a column A1, A2, A3 and another time I may have A2, A3, A4. Is there any way I can look at the columns when it is binded at the beginning and add the columns first?
I really need to use the SQLDatasource though because I am connecting to an AS400 and it is using a connection already made in the webconfig and do not know any other way. I do if it was MSSQL server but not this.
I have a situation where I needed to add a row to my gridview. So say I have rows 3, 4 and 5.
My Datakeys are defined as "ID, CostingID". I did that so I can reference the two ID values I need when saving records.
here is the code in my RowDataBound event.
Basically if it is a datarow, I'm adding the value dataitems so I can get a sub total in the footer row.
Then, I have a boolean field called isDisbursement. So I sort my data by that field. So all records with the disbursement flag as true will display first.
Then as soon as the disbursement flag hits false I add a row to display the Total of the disbursement records value field.
All this works. My problem is, because I added a row at index 4 it inherits the datakey of the row that was at index 4 before. So when I'm looping through the grid rows to save the values I'm having a problem. I've attached an image so you will understand better what I'm trying to achieve. The "Total Disbursements" is the row I added. But it gets the following rows datakey because it is now at index 4.
when I do this, as soon as I reach row 4, although it doesn't have a CostingID it gets the CostingID of row 5 that used to be row 4:
Code: Dim CostingID As Long = Convert.ToInt64(Me.grvCostings.DataKeys(row.RowIndex).Values("CostingID").ToString) Dim strValue As String = CType(row.FindControl("txtValue"), TextBox).Text
Code: If e.Row.RowType = DataControlRowType.DataRow Then If Not IsDBNull(DataBinder.Eval(e.Row.DataItem, "value")) Then _SubTotal += Convert.ToDecimal(DataBinder.Eval(e.Row.DataItem, _ "value")) End If
Ok, so I'm adding linkbuttons to a page dynamically on page_load.I had it to where the link buttons were redirecting to a page with a query string attached. I was attempting to use the AjaxToolKit's AjaxFileUploader and ran into issues with existing query strings.
So what I'm trying to do now is handle the click event of the linkbutton server side, set 2 session variables and then redirect the page to the same page, but with out appending a querystring so the ajaxfileuploader will work correctly.Here is my linkbutton code:
vb Code: Dim Lin As New LinkButton Lin.Text = dr("DeptDesc").ToString Lin.CssClass = "deptlink" Lin.ToolTip = CDate(dr("MeetingDate").ToString).ToFileTime.ToString 'Lin.OnClientClick
[code]....
I know I have Lin.PostBackURL and Lin.setAttribute(...). It didn't work with just setAttribute and I saw a post online about someone setting the PostBackURL and it working...
I have an existing page. I drag a text box control from the tool box onto the page. When I execute the application I get error (this happens to other additional controls as well):
<asp:TextBox ID="TextBox2" runat="server"></asp:TextBox> At this point I do not have any errors.
Now when I reference the control in the code behind, it gives me error when I execute the application.
If TextBox2.Text = "" Then mySqlCommand.Parameters.Add(New Data.SqlClient.SqlParameter("@GroupName", Data.SqlDbType.VarChar, 50)).Value = DBNull.Value Else mySqlCommand.Parameters.Add(New Data.SqlClient.SqlParameter("@GroupName", Data.SqlDbType.VarChar, 50)).Value = TextBox2.Text End If Error2Name 'TextBox2' is not declared. Error3Name 'TextBox2' is not declared.
I have read in so many articles that all controls get their values from viewstate before load event. Then how my dynamically added controls get their values when i am adding them in OnLoad event ie after LoadPostData event.
I have the following code which adds a label and a gridview to an asp.net page:
GridView grd = CreateGridView(kvp.Key.Text); Label l = new Label(); l.Text = "some text"; l.CssClass = "this has no effect"; placeHolderResults.Controls.Add(l); placeHolderResults.Controls.Add(grd);
Two questions really:As the page will have a multiple and unknow quantity of Label + Grid pairs I'm looping through the above code, is this the best way to add the controls to the page?I cannot style the label? How do you do it? Looking at the HTML which is created, the label turns out to be a SPAN.
What I am trying to do here is I want to add the dynamically created labels in the Panel on the Webpage and not directly on the Webpage. My panel has scroll bars and thus when I scroll horizontally or vertically only the background moves whereas the labels are static to the page.
And some labels are even visible on the panel borders on scrollbars (some on the page outside the panel) which are suppose to be placed inside the Panel. So when I scroll either of the ways even the labels should move along with the background image.
So how can I make these labels stick to the Panel and not the Page? How do I do it?
Q1: I have an Asp.net page , one textarea there the user can enter all his details like name age gender; how do get the get name, age, gender in seperate fields(text fields). how can i split?
Q:
dawn barric 25 male answer: text1: dawn barric text2: 25 text3: male
I am using jquery ajax method to get data from a web method and present data using DOM(similar to that of google search results).B'coz the data returned from the web method is huge I want to paginate the results.For that I need to create buttons corresponding to the page numbers based on the no. of records the web method retrieves from the database.So I have taken a div on the page.In the web method ,as soon as I can find the number of records obtained from the database,I want to create the buttons and add to this div and display 10 records per page.As far as I know, it is not possible to access anything that is placed on the asp.net page from Web method.In that case how do I paginate the results?
I'm new to ASP.NET. I 'm trying to figure out how to make an HTML/ASP page where a user puts in data, either in text fields or selection boxes, and on clicking a submit button all of there selected data gets dropped either into a Access 97 Db or an excel spread sheet. Are there any examples out there of this? Is there a place that has already created this and I can just look and the code and figure it out for myself?
I have a set of links that exist in the master page. I have a css class i would like to assign to a particular one of them depending on if that is the page you are at during page load. ex: Home will have the current_page_item class if you are at the index page
This is what I have:
Code:
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load DirectCast(Me.Master.FindControl("ctl00_homeLi"), HtmlGenericControl).Attributes.Add("class", "'current_page_item'") End Sub
I am trying to dynamically add a queryextender expression to the page. something like, when the user clicks a button, we need to add a OrderbyExpression. The following is the code used. It works when added in Page_Load but doesn't when added on a button click event. Upon button click the page just reloads and ignores the filter condition.
I'm trying to add html text to some repeater items during DataBind, but the html text isn't parsed into controls it just displays as text. If I copy the text and just add it to the asp.net page it works fine so I know my syntax is fine. So is there a way to dynamically add more html text during the data-bind phase?
i had create a webpage by asp.net to show article that placed in Database . the article text contain link of other webpage i had written this link by hyperlink tag in the database like some forum when post new article.
this my text in DB (you can visit us by <asp:HyperLink ID="go" runat="server" NavigateUrl="~/WebForm1.aspx" Text="GO">CLICKING ME</asp:HyperLink>)
i want to know how can i let asp.net dynamically create heyperlink control on the page according to number of hyperlink tag in the text if (1-one hyperlink,2- two hyperlink,... so on)
