When I do a TextChanged event on slider1 (by dragging the slider, changing the value), the protected void Slider1_TextChanged(object sender, EventArgs e) event FIRES, however, the TWO other sliders, protected void Slider2_TextChange, and protected void
Slider3_TextChange also FIRES. What gives? why do they fire when I am physically only sliding the slider1 across. The two other sliders values did not change on the webform, yet the event fired.
In order for the event to fire for slider1, I had to insert "Autopostback=true" in the <asp:TextBox ID="Slider1" autopostback="true" OnTextChanged="Slider1_TextChanged">. For <asp:TextBox2> and <asp:Textbox3> I did not put the autopostback event for now.
It took me a little while to figure this out, but the AllowPaging="true" on the FormView seems to be the culprit. I don't have much experience paging from a FormView, but for this requirement the customers wants this kind of UI.I have a FormView with DefaultMode="Edit", which is bound to an EntityDataSource. One of the entity's properties, "ExternalID", determines whether some of the other properties in the entity are read-only. For example, if IsExternal==null, the FirstName, LastName, and Email fields should be rendered as TextBoxes. If IsExternal!=null, the 3 properties should be rendered in Label controls.
Buenos nachos, to be brief, my question is: is it possible to allow users to add new items to a combobox at runtime without having the autopostback property set to true? I understand it needs to postback if a new item is added, but I do not want the box to postback if the user simply selects a different value!
The tag I currently have is below. Without having the autopostback="true", the comboxbox doesn't allow the user to add new items to the box >_<' Any thoughts?
I am getting the following error as Invalid postback or callback argument. Event validation is enabled using <pages enableEventValidation="true"/> in configuration or <%@ Page EnableEventValidation="true" %> in a page. For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered them. If the data is valid and expected, use the ClientScriptManager.RegisterForEventValidation method in order to register the postback or callback data for validation. when an invalid value is passed in dropdown with autopostback=true. What should I do. I want the solution with "EventValidation=true" and "ValidateRequest=true" in the Page directives. Also without any Custom Error Pages Enabled in web.config file i.e Custom Error Pages are off in web.config file.
When I place a value in TextBox1 and then click inside TextBox3 (which is there to have a place to go to get out of TextBox1 and TextBox2) the value from TextBox1 remains and is displayed in the MessageBox.Show correctly.
When I pick a value from the drop down calendar extender in TextBox2 for a brief micro-second the value from the calendar displays in TextBox2 and then the MessageBox.Show displays and the value in TextBox2 returns back to the orginally set value. The MessageBox.Show shows the orginally set value.
For TextBox2 if I set AutoPostBack=false then the TextBox2 works correctly and keeps the date picked from the calendar extender but the ontextchanged="TextBox2_TextChanged" never fires.
In the postback option class, the autopostback property is not functioning (for true or false) to forcibly set the the post back event on web page load as defined at the MSDN Url http://msdn.microsoft.com/en-us/library/system.web.ui.postbackoptions.aspx
have a ASP.NET page for mobile view.On that page I have this part:
While testing this on normal computer using IE7 IE8 it fires the AutoPostBack Control.BUT TESTING IN IPHONE THIS DOES NOT FIRES....ALSO THE DISPLAY IS WIERD BECAUSE A SEPARATE BOX APPEARS AT THE BOTTOM TO SELECT THE LIST.
I have several input pages where I autopostback is marked "True", when I enter the data or select the entry. The page flashes a losses its normal tab sequence. How can I mainatin teh Tab Sequence (focus)? Exmaples
I have a slider that is getting its initial value from a data table. I am trying to update the value upon textxhanged event. My means of accesing the data table is linq. The intitial value is correct and the update event works but the updated value is whatever the default for the textbox is. How do I get the value of the slider extender itself? Here is all related code:
As you can see I put in a value of 20 in the label.text and that is what gets updated to the db. if I leave both the textbox.text and the label.text empty the db gets update to an empty field. I have seen mention of a value attribute for the extender but have been unable to figure out how to use it.
I realized I incorrectly posted my code when I originally posted this query so I will try again. I am trying to use a Slider Extender with the values 1.00 to 7.00. The Slider works properly but I would like to add labels to the slider with the values 1 thru 7.
I have an asp.net 3.5 page with between 5 and 15 dynamically created sliders/textboxes. I would like to have a button that the user can click to reset all the sliders to 0 (far left position).
I have no problem finding the sliders and setting their values; the problem is in redrawing the sliders back to the far left position. No matter what I try, the sliders stay exactly where they were, even though their values are all now 0.
I'm using a slider extender to allow user to select a value from 1 to 7. It works perfectly, but I can't figure out for the life of me how to label the damn thing. I would like the slider to look something like these lovely examples from