Need several instances of label & textbox & linkbutton on a web page, in VB2010, but only the label is displayed.Plus, I need an event when the linkbutton is pressed to read the textbox.
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In a User Control, I need to add a Div to the end of its parent's page. I've done this in a number of ASPX pages, where I put the code to generate the Div and its contents in the page's PreRender event handler, and it works fine. But when I try to do the same thing in the PreRender event handler for the User Control, I get the following error:
The control collection cannot be modified during DataBind, Init, Load, PreRender or Unload phases.How do I accomplish this in a User Control?
I'm trying to programatically add a series to a Dundas TreeMap but I'm getting a Object reference not set to an instance of an object. error. This error looks to be a bug in Dundas, but I was wondering if anyone has tried/managed to do this?
View 1 RepliesI'm looking to add controls dynamically to a table across multiple functions. I'm trying to convert this from a C# app to a web app using asp.net, though this is my first time using asp.net with no web development background. I read the creating tables dynamically in the FAQ but I'm still not sure how to do this.
When pressing the submit button on my form, it will create a table in a place holder. Eventually I would like it to generate urls based on the users input and do this in a function other then the one I created my table in.
In my C# app I was able to add text to a listbox using: lstOutput.Items.Add("Text"); across multiple functions but I'm having trouble doing this with a table.
I understand that my table is a local variable in the submitButton_Click function, but how do I make it global to add rows, cells and controls to it in other functions?
My current code which doesnt work:
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Im into a situation, where, I need to embed linkbutton to gridview to display one field (TITLE) from database. It was done as I've added it in the itemtemplate. Now my situation is bit refined; I should add a text box and another linkbutton which should be disabled on page load and when ever I click that linkbutton which is displaying (TITLE) should make the textbox and another linkbutton visible by displaying corresponding values from the database in the textbox.
View 5 RepliesI'm just wondering if anyone can assist me with this gridview problem
I have this Sql statement that outputs a gridview like this
Job Location Activity 1 Activity 2 Activity 3
Job1 Location1 0 0 1
Job2 Location2 1 0 1
Job3 Location3 0 1 0
* These columns are placeholders
I want to include a footer total that looks like
Job Location Activity 1 Activity 2 Activity 3
Job1 Location1 0 0 1
Job2 Location2 1 0 1
Job3 Location3 0 1 0
Final Total 4
Im not binding the database to the gridview via design view I'm binding it programatically in the default.aspx.cs file
So far the only tutorials I've encountered are ones the have the database bound through design view and gridviews with only one column that can be added. In my particular example I have multiple columns that need to be added and I have already bound the data to the gridview.
I'm having difficulty adding a repeating header row, every x rows, to a gridview. I'm able to add the header only once with the below code. For some reason it will only add it during the last iteration through the for/next statement. I tried manually adding three separate .addat statements to different rows and it only executed the last .addat statement. I couldn't find any information on why it's only working the one time and I hope someone has a fix or better solution.
Code snippet (Note the IsWhole() function verifies that the rownumber divided into a whole number):
Protected Sub Gridview1_DataBound(ByVal sender As Object, ByVal e As System.EventArgs) Handles Gridview.DataBound
Dim grid As GridView = TryCast(sender, GridView)
If grid IsNot Nothing Then
Dim row As New GridViewRow(0, -1, DataControlRowType.Header, DataControlRowState.Normal)
Dim header As GridViewRow = POSTURE_RESULT.HeaderRow
For i As Integer = 0 To POSTURE_RESULT.Columns.Count - 1
Dim TableCell As New TableHeaderCell()
TableCell.Text = header.Cells(i).Text
row.Cells.Add(TableCell)
Next
Dim t As Table = TryCast(grid.Controls(0), Table)
If t IsNot Nothing Then
For i As Integer = 0 To Gridview1.Rows.Count - 1
If IsWhole(i / 5) Then
t.Rows.AddAt(i, row)
End If
Next
End If
End If
End Sub
i am using .net framework 3.5 and visual studio 2008, i want to develope an application
for graphs and charts, so charting control 3.5 i am using.
i want to add multiple series of charts on a same chart which are at different location.How can i do it?
I have the following code the form of a datalist,
<asp:DataList ID="DataList1" runat="server" BorderColor="black" CellPadding="3" Font-Names="Verdana"
Font-Size="8pt">
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I am using the cascading dropdownlist controls from the Ajax toolkit. I have everything working perfectly and all of my select changes work. I have 3 related select boxes that all work great for single item select. What I need is for my last dropdownlist to allow for the selection of multiple items. I have tried adding the 'multiple' attribute to the final dropdown list and it allows the selection of multiple items but I cannot get the items when I post back, just a single item.
View 7 RepliesI am using ASP.NET 2.0, C# and Sql Server 2005.I have 2 tables retruned by the stored procedure to the application. I am returning an Array from my datalayer to my bussiness layer and then to my UI layer.I have added the first table into the array and passing it to the UI layer. This is my current code:
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How to pass the second table details to the same array, NameArrayKeyEntity .
I follow this code [URL] it works. But the example is show only for 1 row.. come to my case when user want 12 rows for the first time gridview row load. I manage to add it by using for loop. but i stuck at the how to set previous data when user add new row to 13th row. The gridview seems like refresh and the entered data is gone!Â
View 1 RepliesI have been google some but I can´t find any solution that have been worked for me. I do use System.Net.mail on my site to send emails to individual employes. Now I would like to be able to email all emplyees. The emplyees email address is stored in a MS SQL table. Is it possible to make a BCC email to all employees in that table?
View 2 RepliesI need to create a grid where the users can see all the memberships, and have a line of checkboxes for each existing role, and be able to check/uncheck roles to allow access authority.
I managed to build a datatable that adds columns and displays them properly, but I have not been able to programatically add columns to the grid based on whatever roles are stored in the system.
I can display the users and their roles by just specifying AutoGenerateColumns="true" when I do that, the checkboxes are grayed out, and the users do not want to have to click a button to open them up.
Here is what I can't figure out.
How do I programatically add columns to the GridView? I have some code in Pageload, but it doesn't work, so it is commented out?How do I turn on all the rows for the entire GridView to edit mode? How do I access the column name for the role they just checked so that I know what to add with the ystem.Web.Security.Roles.AddUserToRole(UserName, Role)?
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VB.NET, Gridview.
How do I programatically set DataNavigateURLFormatString on page load?
i need to replicate or add one more row to the present row in a gridview on clicking a button in template field....am able to add a new row which is having controls not only text....but the entire grid is resetting...i dont want to reset the gri and want to add new row to grid...
View 1 RepliesWorking on a web part that will contain a datalist. How do you set up various properties such as ItemStyle, AlternatingItemStyles, and all the data binding?
I've search for some keywords but could not find anything relevant.
I have a simple user control which contains a textbox and a dropdownlist. I need to add this control multiple times to my page then save the details to my db, validating each control. When they re-enter my page I need to load the user control for each record in the db populated with the data they entered. They can then edit the data, delete the row or add new rows.
I'm trying to find the cleanest most efficient way to accomplish this. I realise I would need to re-add the user controls after each postback re-populating the data. Would the best way be to add each row to an arraylist or list of type object, save it to the viewstate and re-add the controls with data on postback, or is there another method which would suit?
is it possible to add more then one file name in app settings.??if so,how to work around with second file.?..i currently have one file listed in app setting,
<appSettings
file="list.config"
>//i need to add another file here with values??????
<add key="key1" value="a"></add>
<add key="key2" value="b"></add>
<add key="key3" value="c"></add>
</appSettings>
I am having some trouble adding an extra sitemap to my website. I have the main sitemap for the general navigation of the whole site, but would like to add a new sitemap for the navigation in the community area once people have logged in.
In the web config file I have tried both:
<siteMap defaultProvider="AspNetXmlSiteMapProvider">
<providers>
<add siteMapFile="Community.sitemap" name="CommunitySiteMapProvider"
type="System.Web.XmlSiteMapProvider" />
</providers>
</siteMap>
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However the menu that shows is the default Web.sitemap
Before i do postback on button click i need to get data from several controls one at at time & store it before inserting it in sql table, suppose its a dropdown control, the user selects multiple choices
say CITY {Mumbai, madras, dehli}
age range 20- 30 from textbox control etc.
Currently on each data selection of control i have button click event which inserts data but I would like to store this data somehwere til all the selctions are made & use the button click once...
I need to store 2 values for each selection ie CITYÂ MUMBAI etc....
I have gone through the article "Preserving state of Checkboxes while paging in ASP.Net GridView Control", this is great one and works fine with one gridview on the page but in my case I have 2 gridviews and I am unable to preserve state of first gridview after clicking in second gridview.
View 1 RepliesI have a DropDownList on my aspx page and wanted to add ListItem programatically. The item will start from 2 years ago to 1 year later (e.g. from 2009 to 2012) so if the year change, it will be automatic. I also want the current year to be selected by default.
In the code behind, I did this:
For i As Integer = (DateTime.Now.Year - 3) To (DateTime.Now.Year + 1)
DropDownList1.Items.Add(i.ToString())
Next
DropDownList1.SelectedItem.Text = DateTime.Now.Year
As result, I'm having the items in this order: 2011 (selected), 2009, 2010, 2011, 2012. The 2011 is duplicated (I wonder why). When I view the source page on Internet Explorer, I have this:
<option selected="selected" value="2011">2011</option>
<option value="2009">2009</option>
<option value="2010">2010</option>
<option value="2011">2011</option>
<option value="2012">2012</option>
I have a DataList called Books on my form. If the Genre is Mystery, I want the TableHeaderCell to be a different color. The BackColor is set by default to: #66CCFF.
How do I access this control in the code behind? I want to be able to say:
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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.
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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.
