Forms Data Controls :: Assigning Value Using FindControl?
Jul 23, 2010
I thought I had this all figured out, in fact the following is similar to another page I have that works, but dinged if I can see what is wrong with this.I have a FormView with the InsertItem Template as the default. I have a label "UserId" that is assigned the logged on user's userid on page load with:
LblUserID.Text = Membership.GetUser.ProviderUserKey.ToString , which I am certain works.
There is a textbox "User_IDTextbox" within the InsertItem Template of a FormView, and I am trying to write the UserID into that text box using this VB code in a subroutine:
Dim TxtBxUserIDParent As TextBox = DirectCast(FVAddTradeResort.FindControl("User_IDTextbox"), TextBox)
TxtBxUserIDParent.Text = LblUserID.Text
This does not result in populating the textbox within the InsertItem Template of the Formview template with the UserID
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Jan 1, 2010
trying to get something to work, which I think should be extremely easy.
I'm grabbing a value from my database with a repeater, and want to assign the value to a variable that I can parse and then send into javascript. 'videofile' is the variable from the database, and I want to assign the value to 'vidfile', parse it, and then inject into javascript:
<asp:Repeater ID="Repeater3" runat="server" DataSourceID="SqlDataSource11">
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Jun 18, 2010
I now can reference a field in the formview, but, assigning it a value is fighting me.
I want to assign the UserName field in the formview with the login name from the Master (HttpContext.Current.User.Identity.Name).
(A) I tried the likes of: FormView1.FindControl("UserName").DefaultValue = username but of course that doesn't work.
(B) Alternatively, I tried to edit the SQL so that I passed it the HttpContext.Current.User.Identity.Name but didn't have any luck.
InsertCommand="INSERT INTO [TechUserName] ([CertName], [CertLevel], [CertLast], [CertFreq], [CertDue]) VALUES (@temp1, @CertLevel, @CertLast, @CertFreq, @CertDue)"
temp1.text=(HttpContext.Current.User.Identity.Name)
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Mar 5, 2011
My doubt is I am using a grid view that displays the content of many tables. i am using sql server 2005 for that. In a gridview column i have to display an appropriate image which will show when the value of another column and its row is having value as "Available". If the value is "NotAvailable" then the image column in gridview will show another image. How am i suppose to code it in three tier architecture.
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Jan 11, 2011
I am sitting with bit of a problem !I want to assign a value to a gridview to subtract data from a database. Is it possible to do it on Page_Load?
For example : The User will enter Ford in a textbox and then the gridview must display all the cars that is made by Ford that are in the database?
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Jul 8, 2010
I have a Datalist and when a button is clicked I would like to send the values of the fields to a new page to fill some text boxes. What is the best way to do this. I had thought that since the DataList had itemtemplates that were labels I could reference them like regular labels ( str = Label1.text ). That isn't working.I was just going to send the values through a query string. Which I have an example of that, unless there is a better way.
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Sep 30, 2010
I want to select all the values from a table in my database and then put each value in order into labels that are on the asp page.
I can Select all the values from that database fine but I am rather stuck as how to put the values into the individual labels? Here is the code I have connecting to my database.
[Code]....
How can I put the DateTime value into Label1 and the Decription into Label2??
I have had a nose about but can't seem to find the information I need.
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Jun 29, 2010
I am tryingto update my data on a gridview.... i have two ddl's and two textbox...when i click on the one ddl it post the value of the selectedvalue into the textbox and this happens the same for the other one..... I am using the rowupdating event handler... and here is what i have so far...
[Code].....
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Mar 11, 2010
I have a simple EditItem Template within a Formview that I am using to add a record to a table. There is one field in the form that I would like to assign a variable to. I cannot figure it out. I do not see any properties in VS2008 that allow me to assign the value.
The value that I am assigning is an item number, wich is the primary key in the table that I supply on the form.
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Dec 25, 2010
I have a repeater control which looks like so: (Trimed it to show the essentials)
[Code]....
And i have a class which looks like so:
[Code]....
Is there anyways i can use the class properties to populate the repeater control? Probably modify the class or something?
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Dec 13, 2010
I had a scenario where I needed to massage some data before it got bound to a repeater control, so I first thought to use ItemDataBound event to handle it. I assume this would also apply to gridviews, listviews, etc. The pattern I've seen used to do this is something like:
if (it's the right row type, item, alternating item, etc..)
{ someType row = (someType) e.Item.DataItem
someControlType control = FindControl("controlID")
control.PropertyYouWant = row.FieldYouWant }
In thinking about my task, I'm thinking, ok, intercept the data before it's bound, change it, then let it proceed and do it's normal thing... so the step of finding a particular control and assigning the data to a property of it (like 'text' or 'innerhtml') seemed like an extra step to me? do you always need to explicitly assign the data you want to a control to display? For example, say you have a div tag and the field data needs to be it's content. This already happens when I'm not handling ItemDataBound myself to change the data, is there a way to handle the ItemDataBound event to change the data and have it just display where it would if you were not handling the event? The aspx markup already has an <%# Eval("fieldName") %> within the div tag for placement. I know there is an alternative way to handle the call to massage the data right inside the aspx with a helper function like: <%# HelperFunction(Eval("fieldName")) %>, which is what I have used, but I would like to understand the option of using the ItemDataBound event.
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Jul 31, 2010
I'm gonna outline the application roughly: it's a tool, where people can upload a CSV-file, which contains their data for some crazy water-plant-biology-stuff. ;) The job of the application is (besides others) to validate their entered species. So far no problem, I've got my string-array with the correct species abbrevations, and i can parse the species names from the user-edited CSV-file.Whenever a species is found, that is not part of the reference-array its being sent to a GridView as a new row. All of the above works fine - if anything isn't explained well, just ask.
Now, what I want to do is to give the user a simple edit-function: beside the WRONG species name, it would be terrific, if there was some sort of drop-down-list, filled with the correct species names (which are stored as a string-array in my .cs-file!). The user looks at his wrong species, then just has to select the correct name from the drop-down-list, either updates row for row, or even better: edit every row, and update once at the end. Is this possible? I remember that it's quite easy to fill template-fields with data through SQL-connections etc, but is there a more simple way to do it? As said, I've got a fine string-array in my .cs-file behind the aspx-page.Haven't found any code for this. Are template-fields in the Gridview the right way?
Which might be a solution for the updating-problem: I keep storing the wrong names in the rows, and just add another column next to the species name, where this drop-down-list should appear. Then i add a button, which, when clicked, gets the old value & the new selected value for each row, and updates the data. Should work? So the problem remains: how do I add a template-field with many (<500) items in the .cs-file to a GridView-Column?
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Nov 30, 2010
I've been successful in creating GridView controls programically using c#. I'd like to take advantage of using the clientmode=predicatable but I can't resolve setting the ClientIDRowSuffix value. Below is a code snippet:
public void GenerateView(int fileno, string GridType, GridView dataView)
{
object ctrl = FindControl("pnlForm");
System.Web.UI.WebControls.Panel ctrlPanel = (System.Web.UI.WebControls.Panel)ctrl;
dataView.Width = 640;
dataView.ForeColor = System.Drawing.Color.Black;
dataView.BackColor = System.Drawing.Color.Beige;
dataView.AutoGenerateColumns = false;
dataView.Caption = "<B> indicate your selection by typing Add of Delete in the Action box below</B>";
//Resulted in the following error
// Cannot implicitly convert type 'string' to 'string[]
// dataView.ClientIDRowSuffix = "CTR_SEQ";
// I also tried casting it
// CS0030: Cannot convert type 'string' to 'string[]'...........................................
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May 7, 2010
I have a dynamic gridview in which i need to add textbox, checkbox, imgButton in the cell dynamically.
At the moment user click on the imbgutton, a click event fire and i need to capture the user input on the checkbox and textbox of the particular cell.
I have problem in finding out the checkbox and textbox control in the imgbutton click event. The cause is i do not know which row in the gridview i need to search to for the control.
I have try gridview.Fincontrol but fail.
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Jan 6, 2010
using the GridView FindControl.
What I've done is I've setup a Gridview with a datasource to show only 1 of the columns I need from the datasource, but I also have another ItemTemplate Column in which I have a dropdownlist with another datasource that I've bound to the dropdownlist.
What I need to do is have the dropdownlist show the selected one when compared to a id from datasource in the gridview.
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Mar 11, 2010
i have button field in grid view, basicly i want to show to in some of the row only, but i cant find the "ID" using find control
This is my aspx code
[code]....
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Jan 10, 2011
I have a aspx. site with a repeater and a HeaderTemp. in this i have this code.
[Code]....
my question is how do i in VB use the findcontrol from the aspx.vb (codebehind) so i can use the selected value in a if-then-else.
[Code]....
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Mar 22, 2010
In my gridview, I have an ImageButton and when the user clicks it, I show a modal, however, when I popUp modal its showing me the same Datakey value for each row, so, is there a way to use FindControl for the selected row within the RowCommand?
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Feb 9, 2011
this is probably very simple but I'm tearing my hair out!I'm using the FindControl method to try and grab the text in a textbox inside a DetailsView Template Field and display it on a label. Here is my code:
[Code]....
The word text has a squiggle underneath though and it causes an error as "System.Web.UI.Control' does not contain a definition for 'Text' and no extension method 'Text' accepting a first argument of type 'System.Web.UI.Control' could be found (are you missing a using directive or an assembly reference?)". I know the problem is that I'm treating this Control as a TextBox when it isn't, it's a Control. So how do I get from Control to TextBox so I can take the String and use it in code?
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Feb 9, 2010
Is it possible to assign a colour to a drop down list item based on it's value?For example: I have a drop downlist where I've got a bunch of items that have integer
values. I would like to highlight the items with values in 1000s in grey.
Here is what the list looks like:
list_item_name list_item_value
HEADING1 1000
HEADING2 1000
HEADING3 1000
item1 1
HEADING4 1000
item4 4
item5 5
HEADING5 1000
HEADING1 2000
HEADING2 2000
item2 2
item3 3
HEADING3 2000
HEADING4 2000
HEADING5 2000
I've boldified the items I'd like to be highlighted in grey ,For added complexity I need to highlight the items with values 1000 in a light shade of gray and items with values 2000 in a darker shade of grey. I'm using Web Developer, and C#
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May 20, 2010
The Datalist is being databound via an ObjectDataSource and everything here works fine. I have a label which I've added to my datalist and it's unbound to anything. Depending on the message information, I want this unbound label to display a certain phrase but it has to be next to a bound label. But if I try to change the text of the label in the code-behind, VS2k8 reports that the label is not declared. How do I do this?
[Code]....
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Jan 25, 2010
I have a very simple FormView that has several fields on it. There is a field that either returns a "1" or "0" based on conditions in the database. If the value is "1", I want to leave the label control as is (normal font, in black). However, if the value is "0" I want to change the font to bold and change the forecolor to red. Simple, right?
I am able to change the font-bold property using the code below, but if I use the code to attempt to change the font color, I get the following error message for this line:
An exception of type 'System.InvalidCastException' occurred in App_Web_hoge3m1x.dll but was not handled in user code
Additional information: Specified cast is not valid.
[Code]....
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Aug 4, 2010
I have a usercontrol include file that has a panel on which I have programatically added checkboxes that equate to the results of a selection via a sql select stmt.
I am now trying to find the results of the checkboxes (ie checked/unchecked) using findcontrol as per
[Code]....
the commented out code is a different attempt
Is this the correct method(s) or should I do something different
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Apr 17, 2010
Can Someone explain why this doesn't work here, when it works in another formview?
[Code]....
I Get Object Reference Not Set, but its all there. I see no reason why it shouldn't work. Same error happens if i remove the first if statement and leave the second it Gives an error on LocationAddButton.Visible = false;
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Nov 11, 2010
How do I disable the DataGrid controls in ItemCommand using VB.For Example I have dropdownlist bound in my DataGrid. Now I want to Disable this control in Datagrid_ItemCommand.I tried like this
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