Regarding GridView Autopostback?
Dec 14, 2010
I have been working on this issue for ever. I did not come to see any solutions for my problem with the gridview autopostback. I have around 10 fields (bound columns) and 1 template field (a checkbox) in my gridview.All the fields should become editable when a user clicks on the "Edit" of the gridview.After that when the user checks or unchecks the checkbox, depending on that two other bound fields should become editable or uneditable.Please help me.My code is as below:
AuctionDates.aspx.cs:
public
void HasJrMembers_CheckedChanged(object sender,
EventArgs e)
[code]...
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Similar Messages:
Mar 29, 2010
I am using an asp.net autopostback enabled dropdown list. Here i want to restrict the autopostback property fot the value "Select" in the ddl. I have used javascript for this purpose. but not working.My code look like this.
[Code]....
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Feb 21, 2011
I have a gridview with a RadioButton column, which I am creating as per the following article:
[URL]
[Code]....
However - I want the form to Post Back every time the radio button is changed, as opposed to having to click a button to "submit".
As the radio buttons here are not .net controls, but standard HTML radio buttons, I'm not sure how I can do this.
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Sep 16, 2010
I have a peice of code for a custom Gridview that works great if it is not in my Master.Page. As soon as I put it in my masterpage /ajax update panel it seems the autopostback function of my checkbox stops working..... Here is the relevent code :NOTE: (I have tried to turn on ViewState in every thing I could think of.....still nothing)
[Code]....
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Jun 25, 2010
I have an gridview with 3 columns. As default I entered for each columnns an headertext, but depending on an language parameter in the data the headertext is changed on page_load with a SetLabels function.
Recently I added an templatefield textbox with an autopostback=true and an ontextchanged event :
When a user changes the text in the textbox all events are executed properly BUT my headertext is set back to the default value (from the .ascx) even tho page_load event is executing properly WITH the SETLABELS function.
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Feb 16, 2010
I have a Gridview that provides the user the student name for a particular class, a dropdown list to enter grades. If a grade of 'U' is given, a textbox appears in which the last day of attendance must be listed.
It works... though not as conviently as it could; the faculty would like to be able to tab from one dropdownlist to next in succession.
On each ddlGrades changes I write the value to the database and if a 'U' was chosen, display the textBox... but I can't figure how to set focus on the next ddlGrades control, or even the same ddlGrades control that initiated the postbock.
Below is my simplified .aspx followed by the codebehind
[Code]....
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May 17, 2010
In my gridview, I have a column for Amount. I want to calculate the amount as soon as user changes the Amount and display calculated Amount in a textfield. What I have done is I have Amount as Templatefield and have set Autopostback = true. In the event handler for textChanged I have function for calculate Amount which will calculate the amount and set the calculated value in a textbox. But I am getting an error message:
[NullReferenceException: Object reference not set to an instance of an object.]
UpdateInvoice.calculateamt() +87
UpdateInvoice.txtAmt_TextChanged(Object sender, EventArgs e) +5
System.Web.UI.WebControls.TextBox.OnTextChanged(EventArgs e) +8739438
System.Web.UI.WebControls.TextBox.RaisePostDataChangedEvent() +55
System.Web.UI.WebControls.TextBox.System.Web.UI.IPostBackDataHandler.RaisePostDataChangedEvent() +10
System.Web.UI.Page.RaiseChangedEvents() +165
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Jan 24, 2011
In trying to improve 'user experience' with a GridView, I have an administrative application where a GridView is displaying records from a SQL table. One of the columns is a bit column, and is displayed as a checkbox in the GridView. I want the user to be able to simply check or uncheck the box while viewing the GridView, and the value in that column for that record is immediately updated. So I set AutoPostBack="true" on the CheckBox in the GridView's Template Field.
But tests are indicating that the column value is not actually getting changed, even though the page appears to post back and displays the newly checked (or unchecked) checkbox correctly. But if I check the SQL table directly the column's value has not changed.
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Sep 8, 2010
I have a checkbox placed inside a gridview:
<GridView><asp:TemplateField HeaderText="Driver"> <ItemTemplate> <asp:CheckBox ID="CheckBoxDriver" AutoPostBack="true" OnCheckedChanged="GridView_Persons_SelectedIndexChanged" ValidationGroup='<%# Eval("ID") + "-" +((GridViewRow)Container).RowIndex %>' CssClass="CXDriver" runat="server" Checked='false' /> </ItemTemplate> </GridView>
For example: A listViewItem 1 has 3 drivers are checked, A listViewItem 2 has 2 drivers are checked.
Therefore, if changing the selectedIndex of the list, the checkbox indexChanged event will be fired.
How could I disable the autopostback of the checkbox during the listview item changed.
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Jan 25, 2012
I have a tabcontainer with 5 tab panels in it. The second tab has two listitems, which require an autopostback, but this then defaults back to the first tab, is there a way it can stay on the same tab?
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Sep 24, 2010
I have two DropDownLists inside an UpdatePanel.
The values shown inside the second are dependent of the selectedValue on the first, so, I need AutoPostBack=true.
But, whenever the selected value in the first DropDownList is changed causes the UpdatePanel reload.
How can this be solved?
PS.: The UpdatePanel's UpdateMode property is set to Conditional.
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May 3, 2010
i duno why, when i put a autopostback in my drop downlist, after the postback, my content HTML editor and the flash button all disappear.
i have put the enable view state = true. but it still happen.
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Dec 2, 2010
I have an update panel that is triggered by radio buttons. Its pretty straightforward.. show a form if one button it clicked, or another form if another button is clicked. In IE 7, 8, Firefox, etc. this works fine.
In IE6, the radiobutton selection doesnt update the form. If I make a selection, then click the submit button, when the page reloads it will be in it's desired state (meaning the correct form will show). So it's almost like the AutoPostback isnt firing to update the page.
Here's a shortened sample of what Im running into:
[Code]....
In response to @Pabuc below, Im setting the visible property of the table in "Code for Form AB" to true or false depending on the radio button selection.
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Sep 20, 2010
I have a dropdownlist, and when I set AutoPostBack="true", the page keeps refreshing.
any who knows what might be wrong?
<asp:Repeater ID="repFunctionsToAdd" runat="server" OnItemDataBound="repFunctionsToAdd_ItemDataBound">
<ItemTemplate>
<div class="person-section">
<div class="row">
[Code]....
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Apr 13, 2010
I've got some dynamic created buttons in my GridView (adding them OnDataBound), but when I click some button in makes a strange PostBack and all my added button desappears... Also Click event doesn't happens.
How to :
1) Make my dynamic Button inside GridView do not disappear after clicking one of them.
2) Make this click methode works somehow ...
Im making it this way :
B.Click+=EventHandler(fun(_,_) : void { this.LabelCurrentCategory.Text="AAAA"; });
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Apr 15, 2010
I am using Web expression's aspx form + Microsoft Access database + C# to create a page. I am trying to fire client side script (Javascript) and server side script (Autopostback for databinding) simultaniously without using "Codeback"/"CS".
I am not able to acheive the result. I have read all the 139 pages in trying to find the solution posted in asp.net. I am able to fire client side script (Javascript) but Autopost back is not working and Onselectindexchanged is giving runtime error when I go to publish.
Here is the code.
<form id="form1" runat="server">
<strong><br />
Select City : </strong>[code]...
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Jul 6, 2010
With the following code:
<script type="text/javascript" src="../../Scripts/jquery-1.4.1.js" />
<script type="text/javascript">
$(function () {
[code]...
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Feb 23, 2011
I am an asp.net newbie and encountered problem with postback. I have created a web form and put some web controls and set their AutoPostBack property to True.
Some of the controls are listbox, checkbox. However, the SelectedIndexChanged and OnCheckChanged do not fire automatically when an item is selected from the listbox for example or when the checkbox is checked. I noticed that the commands I put in the SelectedIndexChanged and OnCheckChanged is only fired when a button is clicked.
e.g. The code below that sets the text of a label is being fired only when a button is clicked even if the autopostback property of the listbox is set to TRUE.
protected void ListBox1_SelectedIndexChanged(object sender, EventArgs e)
{
ListItem myItem = ListBox1.SelectedItem;
Label1.Text = myItem.Text;
}
Again, I would like the Label's text to change when an item is selected from the listbox and not only when a button is clicked.
What else could I be missing to make autopostback work?
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Jun 26, 2010
I have a gridview with checkboxes going down the side for each item. Some are enabled and others are not. At the top of the page is a checkbox which when checked will make all the checkboxes on the side enabled. THis is not working and I have tried 2 variations. What am I doing wrong?
[Code]....
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Feb 4, 2010
I have 5 textboxes in aspx page, and their AutoPostBack property is True. When I write something to first textbox and press tab key to write something to second textbox, the second textbox don't be focused. I have to select second textbox with mouse to write something it. I want to focus the second textbox by pressing tab key after write something to first textbox. HOW Can I do this?
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Dec 29, 2010
I have a page that when auto or partial post back happens, focus is set to the address bar rather than the next control. The interesting thing is that when I put an alert in my RadScriptBlock, after the OK is clicked, focus goes to the correct control -or- if I put in an invalid location, focus is returned to the ExpLocation control & when a correct location is input the second time, the tab order/focus command works correctly (see code below).
That has this up top
[code].....
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Jan 25, 2011
I have a code like this
protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
{
string strConnectionString = ConfigurationManager.ConnectionStrings["SqlServerCstr"].ConnectionString;
SqlConnection myConnection = new SqlConnection(strConnectionString);
myConnection.Open();
string musisim = DropDownList1.SelectedItem.Value;
SqlCommand cmd = new SqlCommand("select B.HESAP_NO FROM YAZ..MARDATA.S_TEKLIF B WHERE B.MUS_K_ISIM = DropDownList1.SelectedItem.Value", myConnection);
Label1.Text = cmd.ExecuteReader().ToString();
myConnection.Close();
i have a customer name as "MUS_K_ISIM" and his number as "HESAP_NO" All i want is, (autopostback is true) automaticly getting label "HESAP_NO" with who has this number "MUS_K_ISIM" in Dropdownlist. How can i do that? Error: Description: An unhandled exception occurred during the execution of the current web request. review the stack trace for more information about the error and where it originated in the code.
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Sep 23, 2010
I have three AJAX sliders and each has a:
<asp:AsyncPostBackTrigger ControlID="Slider1" EventName="TextChanged" />
<asp:AsyncPostBackTrigger ControlID="Slider2" EventName="TextChanged" />
<asp:AsyncPostBackTrigger ControlID="Slider3" EventName="TextChanged" />
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.
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May 14, 2010
When a user clicks a control that has autopostback=true, the screen refreshes and scrolls back to the top of the page. Is there a way to avoid this and have the page stay in the position it's in?
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Mar 1, 2011
I have an ASP.NET FormView within an updatepanel. I'm auto-saving the form by setting AutoPostBack=true for each of the items within the FormView.
This means the user can click a few elements in quick succession and fire off a few async postbacks almost simultaneously.
The issue I have is that the user is able to keep scrolling down the form while the async postbacks are not yet complete. The browser always scrolls back to the position it was in at the first postback.
Page.MaintainScrollPositionOnPostback is set to False.
I've tried all sorts of things in ajax and jquery with:
[Code]....
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