C# :: Conditional Logic For Gridview ItemTemplate (using Mark Up Only)?
May 30, 2012
I have a gridview as shown below. When the EmpType is contract the EmpID must be masked as "XXX"; for regular employees, actual EmpID should be shown. Also, when it is masked, I need to add a button control in the EmpID column.I need to do it using mark-up; not using code behind. How can we write the conditional logic for Gridview's ItemTemplate for this logic?Note: .Net 4.0
<asp:GridView ID="Gridview1" runat="server" AutoGenerateColumns="False">
<Columns>
<asp:BoundField HeaderText="AssociateID" DataField="AssociateID" />
[code].....
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Apr 5, 2009
I want to be able to call forth hundreds of different photos be selecting them from a listbox or something of that nature.
Normally, if I only had a few images, I would amke their visibility false and then use If statements to turn on their visibility once it is selected. However, putting hundreds of images on to a form and then changing their visibility, seems like a pain.
I was wondering if there is a way to call forth each photo within the resources folder when an item is clicked so I don't have to put each one directly on the form.
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Jun 11, 2012
In ASP.NET, using VB, how can i do this on the page itself, not in the code behind? [code]
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Nov 1, 2011
I have a gridview where each columns have two template fields. One is ItemTemplate and another is EditItemTemplate. Now in EditItemTemplate it will show some textboxes where i can perform necessary editing. I can easily fetch data from each cell by using the following code-
[code]...
But how can i fetch data when the grid view is not in editing mode that is in ItemTemplate. I have tried the following-
[code]...
But its getting the exception object reference is not set to an instance of object. This is probably happening because the above code should be used in a method like RowDataBound when a row is instantiated. But I have to fetch data from some other method.Again for clarification I want to fetch data when the gridview columns are in ItemTemplate Mode.
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May 31, 2012
I have a GridView with ItemTemplate. I am trying to approve and reject booking using ImageButton but I do not know where and how to put the sql command to update booking status.I need hints to continue my coding.
Here is my ItemTemplate for Accept and Reject imagebutton:
<asp:TemplateField HeaderText="Action">
<ItemTemplate>
<asp:ImageButton runat="server" ID="acceptBooking"
ImageUrl="~/images/accept.png"
OnClientClick="if (!window.confirm('Are you sure you want to accept this booking?')) return false;" />
</ItemTemplate>
[Code]...
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Jan 28, 2011
So I'm writing the equality operator overload (Operator =())for a custom object, and the resulting mess of If conditionals is just an eyesore. But so far, it seems like the only sane way to check the values to as to match the specific behavior of this object.
The rules are:Num1 is required, period, and both the left and right operands and must be equal for True. Else, False.Num2 is optional, but if specified, must be present for both the left and right operands, and must be equal for True. Else, False.Num3 is optional, but can only be specified if Num2 is also present. Else, False.Num3, if specified, must be present for both the left and right operands, and must be equal for True. Else, False.
[Code]..
I also know that I could cache elements of the checks into booleans and then use those to reduce the amount of text. But that seems like a waste of cycles just for code readability. So I wanted to know if the SO community had better thoughts on reorganizing it, just in case I'm being too verbose with my checks.
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Sep 3, 2010
The application uses ADO.NET to invoke sprocs for nearly every database operation. Some of these sprocs also contain a fair amount of domain logic. The data access logic for each domain entity resides in the domain class itself. ie, there is no decoupling between domain logic and data access logic. I'm looking to accomplish the following:
[Code]...
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Apr 11, 2011
How can I set the datasource of an ItemTemplate? Right now I have one that is wrapped by a datarepeater and that is how I databind to it.
<asp:Repeater ID="rptTotal" runat="server">
<ItemTemplate>
<tr>
[Code]....
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Jun 12, 2012
In my application, I have been getting this error each time the treeView loads it's items. This error makes my application slow on load and takes at least two minutes to load.The error is: System.Windows.Data Error: 26 : ItemTemplate and ItemTemplateSelector are ignored for items already of the ItemsControl's container type; Type='TreeViewItem'
My xaml code for the treeview is: (I'm using VB.net on my ViewModel)
<TreeView ScrollViewer.VerticalScrollBarVisibility="Hidden"
ItemContainerStyle="{DynamicResource tviStyle}"
Background="#FFF0F0F0" BorderBrush="#FFE5E2DB"
[code]....
The binding of the ItemsSource is an ObservableCollection(Of TreeViewItem) thats is filled from a database.
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Mar 5, 2011
I have a Repeater on one of my pages like so: [code] But, when I run it it errors out with the message:'btn<% Container.DataItem %>' is not a valid identifier.I want to append btn to the Container.DataItem value so that I have dynamically assigned control names that are associated with the underlying data item. Any ideas?
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Sep 3, 2011
I have the following code. It works as is, but... I am not always going to have an even number of items in the RSS feed So, at the end of the table, I might have only one table cell on the last row. So, is there a way to count the number of ItemTemplates and AlternatingItemTemplate, so if it is an odd number I would be able to add another cell <td> </td></tr> and close the table row?
[Code]...
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Sep 2, 2011
I'm hoping to dynamically change the number of columns in my ItemTemplate of my ListView:
<asp:ListView runat="server" ID="ReportListView" DataSourceID="ReportListViewSDS">
<LayoutTemplate>
<table>
<tr>
[code].....
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May 3, 2012
I have the following inside a formview, I want to be able to show the information and if anyone makes changes I should update this information by clicking on update.I am fairly new to asp.net development , how can I do it? I keep having exception, saying frm1 is expecting editmode.
<<asp:Formview D="FormView1" runat="server" DataSourceID="SqlDesc" ID="frm1">
<ItemTemplate>
<table>
<tr>
[code]....
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Apr 13, 2010
I use Visual Web Developer 2008 Express.I have Label1 in a DataList ItemTemplate. I wish to use a button to get the text from that label and add it to text in TextBox1 which is elsewhere on the page.
I know how to do this from a standard label on a ASP.NET web page but cannot work out how to get the text from a label inside a DataList ItemTemplate.
This is what I thought I should do Protected Sub submit_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles submit.Click
TextBox1.Text = TextBox1.Text & " " & DataList1.ItemTemplates.ItemTemplate.Label2.Text
End Sub
I thought that because DataList1.ItemTemplates.ItemTemplate.Label2 - System.Web.UI.WebControls.Label is what is written in the properties window header when I select the label in the DataList template.
When I try that, I get a Blue Squiggle under "DataList1.ItemTemplates" and if I hover over the squiggle the error box comes up saying " 'ItemTemplates' is not a member of 'System.Web.UI.WeControls.DataList'
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Jan 26, 2011
I'm a newbie in asp.net. When using FormView, there is a big amount of code in ItemTemplate, EditItemTemplate and InsertItemTemplate which is almost identical.
[Code]...
ListView allows the use of LayoutTemplate - but I didn't see any examples that insert this kind of code in LayoutTemplate. And inserting this code in LayoutTemplate would result in an error.DetailView allows to produce code automatically but I'd like to use a specific design (for ex. using "fieldset" that encompasses some fields).
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Feb 21, 2012
Okay, so I wrote a few custom ItemTemplates for VS2010 that implement IWizard in VB.NET (4.0). Straight forward enough. They work during my testing, but when someone else deploys and attempts to use any of them, Visual Studio throws an incredibly generic Exception has been thrown by a target of invocation error.
Stranger still, after they open up the project properties and try again... they work. Without changing anything. Anyone have any clue what is going on? Or perhaps even just a way of getting VS to give me a more specific error? I already tried devenv.exe /log but nothing out of the ordinary was there.
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Dec 29, 2011
How can I create alternating background colors for listview rows while only using ItemTemplate? I don't want to use AlternateTemplate because I would have to edit both of them everytime I want to change something when all I'm using it for is to create the alternating background colors. So what's a way I could do it using only the ItemTemplate?
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Mar 27, 2009
I have a parent repeater with nested repeaters.My problem is I am trying to use 'Next' and 'Previous' buttons to rebind my repeater (rptTabContent) and thus the inner repeaters also, but when I try to manipulate the state of these links during the ItemCommand event they are overwritten by the bind.
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Mar 9, 2012
I have a POCO object and I want to mark a property as a key (see TestClass below).I'm getting the following error. 'Key' cannot be used as an attribute because it is not a class. C:UserszzzDocumentsVisual Studio 2010ProjectszzzzzzBOTestClass.vb
[Code]...
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Jun 20, 2012
I want to use a value that is pulled from the SQL within the if statement. Ideally i want to do the equivalent of <% If DataBinder.Eval(Container, "DataItem.BookID") == 1 Then%> Is there a way to do this with the correct syntax?
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Nov 16, 2011
The numbers that get displayed are beyond the 2000. How do I write the code to only display numbers up to 2000.
Sub Main()
Dim iNum1 As Integer
Dim iNum2 As Integer
[code]......
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Aug 5, 2009
Is there an ability in VB.NET to deprecate code?I know that in C# there are 'attributes', and tags in java; is there anything similar in VB.NET, other than leaving a 'todo:...?
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Sep 17, 2009
I have a program that takes data from text boxes and exports them to a text file (all of this works). the problem I'm having is how do i mark the file for deletion? I couldn't find a tutorial on it.[code]
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Mar 1, 2011
Possible Duplicate: Place watermark image on other images (C#, ASP.Net) how to add water mark to a photo during uploading in asp.net ???
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Nov 24, 2011
I am trying to create an HTML email with an attached image using asp.net VB.
The trouble I am having is that the image is stored as binary code in a table rather than on the server.
I have the following code:
Dim myHeader As New LinkedResource(Server.MapPath("/Handler.aspx?id=237"), "image/jpeg")
I know it's the question mark in the path that's causing the problem. Does anyone know a way around this??
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Dec 6, 2010
I have a DataTable which I want to check if values in three of the columns are unique. If not, the last column should be filled with the line number of the first appearance of the value-combination.
[Code]...
I solved this by iterating the DataTable with two nested for loops and comparing the values. While this works fine for a small amount of data, it gets pretty slow when the DataTable contains a lot of rows.My question is: What is the best/fastest solution for this problem, regarding that the amount of data can vary between let's say 100 and 20000 rows? Is there a way to do this using LINQ? (I'm not too familiar with it, but I want to learn!)
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Aug 8, 2011
I have created a few WebRequest extension methods that support cancelling. Is it possible to mark related .net framework methods as Obsolete. That will allow other developers to get warning and encourage them to use a new extension methods.
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May 15, 2011
In my application I have bound a datagridview to a SQL2005 bindingsource.I really had to change a database field (more length allowed) and now de DGV displays red exclamation marks and states: 'Colomn 'password' exceeds the MaxLength limit'. (the 'password'-colomn isn't even displayed, but that's a sidenote).I tried different things but can't get rid of the exclamation marks. how I can manage this. I really don't want to create a new DGV, because there a lot of code and stuff involved.
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Sep 26, 2009
Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
Dim Response As Integer
' Displays a message box with the yes and no options.
Response = MsgBox("Do you really want to exit?", Buttons:=vbYesNo)
[Code] .....
How do I place that blue question mark symbol next to "Do you really want to exit?"
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Jul 23, 2009
I'm trying to search a picture from a color or a color close to the original color and then mark it in the picture if it is in the picture. How can I do this?
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