Syntax For Boolean "Not" In "Visible=" Property Of A TextBox?
Mar 11, 2010
VWD 2008 Express. Vivual Basic.
I am trying to tie the Visible property of two textbox controls in a gridview to the value of a property. One I want to be visible is the property is true and one I want to be visible is the property is false. I have not been able to figure out how to express this. I have tried the following, with the non-working line in red.:
[Code]....
The "Not IsInEditMode" does not work as desired. The property code in the VB code behind is:
[Code]....
What is the proper way to code the Visible= property?
How can i use a checkbox to represent a boolean bit field in an MVC View? Out of the box, it defaults to a textbox..There is no boolean datatype in SQL Server 2008 so i used a bit datatype. I guess its a custom template but i cant seem to get the syntax right.
'Person' is not a member of type 'Transient.rowtype[(Id,Edm.Int32(Nullable=True,DefaultValue=))]' in the currently loaded schemas.
Does the EntityDataSource not support walking the relationships? How would you do this with the EntityDataSource?
Also the @userName parameter is being added in the code behind for now. Extra points for anyone who knows how to specify a username parameter directly in the WhereParameters collection.
The Get of the Visible property of a control recursively looks up the tree to indicate if the control will be rendered or not.
I need a way to see what the "local" visible value of a control is regardless of what its parent controls are set to. i.e. Whether it itself was set to true or false.
I have seen this question, How to get the "real" value of the Visible property? which uses Reflection to obtain the local state, however, I have not been able to get this working for WebControls. It's also a rather dirty method of getting the value.
I have come up with the following extension method. It works by removing the control from its parent, checking the property, then putting the control back where it found it.
public static bool LocalVisible(this Control control) { //Get a reference to the parent Control parent = control.Parent; //Find where in the parent the control is.
[Code]....
Is this an acceptable way of doing this? It works fine and I haven't come across any performance issues. It just seems extremely dirty and I have no doubt there could be instances in which it might fail (for example, when actually rendering).
In an ASP.NET 3.5 VB web app, I successfully manage to cache an object containing several personal details such as name, address, etc. One of the items is CreditNum which I'd like to change in the cache on the fly. Is there a way to access this directly in the cache or do I have to destroy and rebuild the whole object just to change the value of objMemberDetails.CreditNum?The cache is set using:
Public Shared Sub CacheSet(ByVal key As String, ByVal value As Object) Dim userID As String = HttpContext.Current.User.Identity.Name HttpContext.Current.Cache(key & "_" & userID) = value End Sub
I'm working on a .NET 3.5 web application which shows/hides table rows contained in ascx files via an interface implementation (the controls containing the table implement the interface).So, given this markup in the .ascx:
When are declared values bound to properties of a user control in WebForms?
I have a user control which has a public property which is an enum type. In my aspx page I'm setting it's value declaratively. In the ascx I'm outputting the value to the page using <%= %> syntax. The value that is output by the echo syntax is always zero 0. The enum does nopt have a zero value.
My question therefore is, is echo <%= %> syntax evaluated before the declared value is bound to the property?
I'm going to assume that zero is the "unset" value for any enum member and therefore assume that <%= is executed before the value is bound to the property.
I have a form with a ton of gridview controls on it. All of which are driven by a dropdown list control. When I select a value from the dropdown list control it populates the 5 gridview controls with data from the database.If there are no rows associated with the record from the dropdown list then I am going to set the visible property of all of the gridview cotrols to false.
I know how to set the property I just need to know where I would set it and what I would check.I can put my code in the selectedindexchanged event for the dropdownlist control but how do I check to see if there are no rows associated with that value? Maybe some sort of If gridview1_rowdatabound = 0 then...
I have a Sidemenu item in my ASP.NET application like below. There are two types of users in my application (Associates, Managers).When ever Associate Login then I have to disable Manager link. I am not able find visible property in codebehind since it is a HTML control. So need your support how to handle this
"'ErrorMessageResourceType' property specified was not found."
{"The resource type 'XXXX.XXXXXX' does not have a publicly visible static property named '_RequiredXXXX'."}
I'm getting this error when my Create.aspx view is called and steps over that line:
<%=Html.TextBoxFor(Function(model) model.NO_DEMND, New With {.class = "txtbox", .disabled = True})%> <%=Html.ValidationMessageFor(Function(model) model.NO_DEMND)%>
The message is there in the Ressources file, I think the problem is deeper than that but i'm having a hard time finding it. It pops this error very early on the ASPX page. It's the first model component it goes thru, i tried removing this one and it's the same message for all the model.xxxx components. I guess it's an error somewhere in the linkage. The .EDMX is correct and I get no build errors,
I have a problem that in DetailsView Edit Mode, if I go to edit fields, and set a fields visible property to false, when I update the record through the built in update options it sends a null value. If I change the field back to visible, it passes the data just fine.
Consequently, I tried just setting the field to Read Only = True, and got the same result even though the current values do show up in the edit mode, just read only.Is there anyway to hide the field but still allow it to pass the data it currently has "BACK" into the record.
Hi I have a situation where I want to set the initial visible property of an Image to False and then in my code change it to True and then run a sub routine. My problem is that no matter how I order the code the sub runs before the image becomes visible. When I debug the image only becomes visible when it hits End Sub. Is there any way around this? Here's my code:
I have working on a form where the textbox.visible=false, however if certain conditions are met, such as the selection of something in the dropdown box, the textbox.visible should change to true.
This is not the case, each time, I select the item in the dropdown box the textbox doesn't appear.
Here is the section of the code that doesn't appear to be working as I thought it should
Protected Sub DropDownList1_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles DropDownList1.SelectedIndexChanged If IncentDescription = "ALL LOAN FEES" Then TextBox4.Visible = True Else Exit Sub End If End Sub
I have a textbox (txtMaiden) and a radio button list (rblGender) in two separate User Controls that I'm using for a registration site. The txtMaiden control appears or disappears depending on whether Male or Female is designated on the radio button. This all works fine but I want the textbox to have focus when it becomes visible. As of now, it only gets focus when the page refreshes. Code follows.
I want to show some panel with a label, both located on a MasterPage, from inside it's child pages.. I already did the coding on the MasterPage:
public class MyMaster : MasterPage { public void ShowPanel(string pMessage) { labelInside.Text = pMessage; myPanel.visible = true; [code]...
This "works" ok, but it won't show nothing, since I need the page to be "refreshed" in an "ajax-way" like an UpdatePanel, which I can't use because the Trigger is in another page, right?I really need this to work.. even if you have another completely different way to do this,
I have a database field called ImageLocation, I have the ImageUrl property bound to: Eval("ImageLocation", "{0}")I would like to bind the Visble property to false if the ImageLocation is null data. I can not figure out how to set the control properly, currently the Datalist shows me all the data and when the image location is null it shows me the name of the Hyperlink control which happens to be Hyperlink2.
I have two Repeater controls, each hosted in a user control. Both user controls are contained in the same aspx page. Only one User Control is visible at any one time. The repeaters are comprised of checkboxes, and text boxes for user input.
The aspx page is configured with an Ajax ScriptManager; and contains several Ajax UpdatePanels. These UpdatePanels result in partial page post backs when text is changed in a textbox control in controls on the aspx page (this is not the behaviour for the Repeaters in the User Controls). Through use of several AsyncPostBackTriggers, various controls contained in the other UpdatePanels on the page have their content refreshed in response to the partial page post backs they are configured be notified about.
Depending on a radio button group selection, I set the visible property to true or false - as appropriate for the User control containing a repeater control. The Repeater control is then populated with data using databinding. All of this works.
However, when the Submit button is clicked, the Repeater control contains no data.
Given that I am not dynamically adding the Controls containing the Repeater controls (but using Visible true / false). I would have thought that the State of the fields and the data in the visible control would be preserved during the post back.
The User Controls are contained within the UpdatePanel that contains the Submit Button.
I have explicitly Enabled View state without any effect.
Am I correct in assuming that I should not have to do any explicit handling of data changes the user makes (via client side script and manipulation of an Data Structure Representing the Repeater Data); and the View State should maintain the data I need to access on the server when submitted?
I do not believe that it is the User Control visible state changes that are causing the issue because when the page is initially loaded on of the User controls is populated with dummy rows (so it displays).
I am suspicious that because the visible state of the controls is changed during partial page post back, that the Page View State ends up with no knowledge of the User Control and therefore cannot track its data (or changes).
