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Questions tagged [asp.net-controls]

ASP.NET Web server controls are objects on ASP.NET Web pages that run when the page is requested and that render markup to a browser. Many Web server controls resemble familiar HTML elements, such as buttons and text boxes. Other controls encompass complex behavior, such as a calendar controls, and controls that manage data connections.

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Asp.Net ViewState performance

I am new to Asp.Net. I have a question about a viewstate control. Msdn says that it as a client-side state management but suggest that it can be disabled if there is big data on the page because of performance issues. So, if this is a client-side…
Omer
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Advantages of not specifying control IDs?

Reading over TRULY UNDERSTANDING VIEWSTATE the author suggests: When ASP.NET parses the form, and finds a tag with runat=server, it creates an instance of the specified control. The variable name it assigns the instance to is based on the ID…
JSuar
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ASP.NET Server control with an additional bindable field

I have created a custom server control, deriving from System.Web.Contols.CheckBoxList to customize how a CheckBoxList is rendered. I also wanted to add another bindable field and get the value of the field within the CheckBoxList.RenderItem()…
sshow
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Using SELECT DISTINCT on an already created DataTable object?

I have an already created DataTable object which i am using for my girdview (asp.net) i also need to bind a column of that object to a DropDownList. The datatable has the correct details in the column but the column contains more that 1 of the same…
Martin
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how to assign a control property value from a global variable in page code?

Greetings, I have a control and list of variables and I want in the control property to be assigned to the variable value directly in the page not from the back code, something like this My global variables public string Banana =…
Kronass
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ASP.Net C# - Remove controls dynamically

I dynamically create a RadioButtonList or a CheckBoxList depending on a condition within a Button_Click event (which works). protected void btnGetQuestion_Click(object sender, EventArgs e) { string connStr =…
Bhav
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ASP.NET ListView Paging : Invalid viewstate

I have a ListView control as follows (for posting here I've removed the values from my ItemTemplate):
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Ciaran Gallagher
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Passing value to table from DataGridView by editing cells itself

I have DataGridView like this s_code | s_name | t_result | ______________________________________ S2 | John | | I used code below to display this private void ViewStatus() { BindingSource bs1 =…
TheCatalySt
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ScriptControl WebResource Loading Order

I am adding a new control to a project that has some ASP.Net controls. Each control essentially comprises of a .Net class (inheriting ScriptControl) and a javascript file. Each of the js files are added to the assembly as a WebResource [assembly:…
Jeff LaFay
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how to add buttons in content place holder at runtime in asp.net?

In my form i have added one content place holder and also added a button within th e content place holder manually.But now i want to add a button in the same content place holder at runtime. I tried the following code, but the button is not showing…
Saravanan
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How to manage javascript Dependency for Ajax Extender controls

Does the Ajax Extender control base provide dependency management? I am creating a set of controls that uses a few base scripts used by the behaviors and from here Creating a Extender Control it sort of looks i will have to include my base script in…
Deeptechtons
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Is it possible to append an Updatepanel control to a page using Javascript/Jquery?

I'm trying to develop a system where users can drag icons (which represent user controls) onto a web page. However, the user controls need to be housed in an updatepanel (or similarly AJAX enabled frame) so that they can be updated without having to…
Andy F
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how to write tag Name and ID for ASP.NET Server Controls

I am developing an asp.net server control and in the protected override void RenderContents(HtmlTextWriter output) method I just write something equivalent to this: output.Write("
Omu
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Object reference not set to an instance of an object

I am trying to assign values to the hiddenfields duting page_load..but its throwing System.NullReferenceException.. This is the code iam using in the page_load event.. Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) …
Shijilal
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How to add correctly a script to a control?

I have this code: Dim script = New HtmlGenericControl("script") script.Attributes.Add("type", "text/javascript") script.InnerText = "var alohaInterval = setInterval(function() {if (typeof Aloha === ""undefined"") {return;}…
Lajos Arpad
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