Web Forms :: Postback Event Handling?
Oct 5, 2010
According toMSDN[URL]Postback event handling:If the request is a postback, control event handlers are called. After that, the Validate method of all validator controls is called, which sets the IsValid property of individual validator controls and of the page."It is my understanding that the Validate method of the validtor controls is called after Load but before the control event handlers.The text quoted says its after the control event handlers.
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Mar 8, 2010
As I am new to .NET framework.I have a doubt in Event handling. For example to handle a button click we write a delegate as private void button1_Click(object sender, EventArgs e)In this function I can change the sender object value means I can do what ever I want to do with Button object.Why this is implemented in this way in Framework.Is this good to do so.
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Feb 5, 2010
In one of my ASP.NET webform application I want create dynamic controls and add Event handlers for those dynamic controls..For example when I click a button I want to display a list box and I want to add
SelectedIndexChanged event for that list box.I have errors in doing this... Here's the code I tried out... I think there are errors due to my lack of knowledge in postback
[Code]....
[Code]....
DLabel is a existing label control...*** When I click the button I get the ListBox... When I select the Item 1 the page reloads and nothing is displayed in the Label.
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Sep 8, 2010
i should handle a event whn my focus chages from one text box to other....[ i should get an error as you are not entered the data(it should accept only numbers) ]
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Jan 19, 2011
I have created radiobutton list dynamically in my app'n...can any one tell me how to handle the selectedindexchanged event for the dynamically created radiobuttonlist. I just want to capture the value of radiobuttonlist and store it in the database.
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Mar 1, 2010
I am not sure how to do this. I have part of it working and I think I understand why it isn't working, I just not sure what I have to do to fix it... I am dynamically placing some data into an ASP:Table from a DataSet. This is all done from the Page_Loud event. I am looping through the dataset by going through the rows no problem to display the data in cells added by rows to the asp:table.
What I am also doing though is adding a button for each row that is to run an Access insert query that adds a record in a log table.I have used the following code to get this to work which it does, most of this is called through functions in the Page_loud event. this is the gist of it:
this is in a loop of the DataSet
for (int i = 0; i < dsResult.Tables[0].Rows.Count - 1; i++)
{
Button btn = new Button();
btn.Text = strDynamicText;
intTID = dsResult.Tables[0].Rows[i].ItemArray[5].ToString();
[Code]....
Here is the problem I am having. The button does display for each row, and the query does execute and run when I press the button. The values being passed in intTID and intUserGroup (are global), are suppose to be different for each row though, and are to insert a unique table ID, and a different group depending on what is in the dataset. Problem is, it is only assigning the last tableID from the result set into the button and will always pass that same ID no matter what button is pressed. This is the same with the intUserGroup. It needs to dynamically have differnent table IDs passed but that's not happening. What do I have to do differently to make sure that when the button is created dynamically it will pass the unique values for each row?
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Jun 29, 2010
I have a GridView, here I am adding the LinkButtons at runtime to the GridView cells. I am also attacing an click event on these LinkButtons.
The issue is that when I populate the GridView from the Page_load the LinkButton click works, but if I move GridView polulation code in the Page_PreRender event the click event doesn't executes.
Code:
private void Page_PreRender(object sender, System.EventArgs e)
{
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GridView1.DataSource = getDataTable();
[Code]....
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Apr 3, 2010
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Jun 24, 2010
I am creating a webform in which I am having two radio buttons (Yes/No), one textbox, and two lables.
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I want to use custom server control for this whole process as we have to use this DLL in other application also.
Being as beginner I got just confused about event handling methods for server controls.
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Sep 5, 2010
I have a situation here.
review the following code
[Code]....
Now when user clicks on the accept or reject button, there is an error (could not parse server message) however if there is only one instance of both buttons the code works fine.
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Nov 17, 2010
On my page: a Button1, a ListView1, a Panel1 and inside Panel1 an ImageButton1In the ListView1_PreRender-Event the property Panel1.Visible = false or Panel1.Visible = true is set.1. After first loading of the Page Panel.Visible = false ist set in ListView1_PreRender.2. After the postback click on Button1 the criteria for the visibility of Panel1 are evaluated, thus setting in the ListView_PreRender Panel.Visible = true.
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Mar 10, 2011
I have a script that runs during the Page_Load() event which checks a database table to make sure that the user is still owns the lock on the page. If they no longer own the lock, I disable all the controls on the page and display an
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Jul 29, 2010
I have a custom ascx user control on my page that includes a dropdownlist. There is an onSelectedIndexChanged event handler that is connected to this dropdownlist. The first time the user selects a value, the page does a postback and the logic executes correctly. However, if the user then goes to change their selection, the event handler does not get triggered.
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Jan 18, 2010
I am creating n number of Combo boxes dynamically at run time and adding a Handler of Combo1_SelectedIndexChanged() to the combo boxes.
At run time, When I select an item from one of the Combo boxes, the event fires n times rather than 1.
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Mar 4, 2010
I am trying to catch an event that is in a user control inside a master page contentholder and refresh the content page. I am having a hard time finding a good example. Even on this site I am timing out on search.
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Aug 19, 2010
On my master page , I have "Search textbox" and "Search Button".
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How to do this ?
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Mar 8, 2011
im trying to handle the event for my grids itemtemplate button but its not firing.
[Code]....
[Code]....
i want to find a row of my button click and there i can call my method.
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Aug 26, 2010
I have a ListView that contains a large collection of rows with textboxes that users can optionally fill out. These textboxes are not databound. When the user clicks "next" i need to iterate over the rows and determine which fields the user has filled out, and then update a sort of "cart" with the data and move to a confirmation page ("you have selected a, g, v, zz, is this correct?" sort of thing).
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Jul 15, 2010
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Dec 9, 2010
am designing report using gridview in which i want drill down report, i.e. when i click a cell of gridview which contains value from the database. i want a new gridview to be populated with detailed report, which should be generated by passing some values from parent gridview.
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code is:
in gridview rowdatabound
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May 4, 2010
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Jun 5, 2010
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Mar 8, 2010
how ASP.NET handles page postback and events?
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Jun 8, 2010
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Jan 4, 2010
I have a custom control which contains (amongst other things) an imageButton.
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here is my code:
[code]....
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