I'm working with asp.net, and i have a gridview with some rows as textboxes. I want to know how to get the value of a textbox if those textboxes are created in runtime and the id are default values, therefore I can not access the FindControl method because I do not have the id of textboxes.
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I have an array of RadioButtonLists.
RadioButtonList[] r = new RadioButtonList[20];
On clicking a view button, my program creates a dynamic table and adds an image and a RadioButtonList to each cell:
tcell.Controls.Add(r[i])
On clicking a submit button, I’m trying to access the value of SelectedIndex on all RadioButtonLists; however, it’s showing up as null.
var value = r[i].SelectedValue;
I found some answers on how to get the value of RadioButtons created dynamically using .FindControl, but since my table is also dynamic, when I give Table1.rows, it results in null.
Dynamically created controls lose their state, when they are posted back, so you will have to re-create it yourself - outside the
if(!IsPostBack)
block in Page_Load (or somewhere similar).
I have created an application which uses a FormView with Select and Update commands, the formview will only populate when I pass it a parameter, however here is where the problem is. If I pass the formview a parameter but in my database there is more than 1 row I want to be able to choose which row populates the formview using something like a dropdownlist as a formview only holds 1 row.
Since there's no code, I'll answer with words as well:
Click on FormView control
Go to properties and set AllowPaging to true // Adding this property generates the paging interface automatically, which will display numbers for each record return from your database
I have a textbox named textbox1 and a dropdownlist. Dropdownlist contains the list of branches and i want that when i select a branch from dropdown i want to get the respective branch code to be generated in a textbox from the Database or from c# coding. How will it be possible ?
Am I missing something, is it more complex that just putting an event handler on the dropdown so that when it's value changes it calls your method that can do whatever it needs to do to generate the string for the textbox?
Skipping passed the "database" portion of your question (and assuming your data isn't bound to the DropDownList)..
One way in ASP.NET, to accomplish this, I believe, is to have your code print DropDownList.SelectedValue's value in the textbox during an event.
Here is a link showing how to bind an event to DropDownList in jQuery
I have a GridView A that have many columns, one of those contains price for each row. so the cue is how or in which way, can I update/refresh the total price that will be showed in a Label or TextBox (not in GridView Footer)?
My working platform is C# 3.0 / ASP.Net
Set up a "total" variable. Use jquery to iterate through each row of your table/gridview and add the particular column value to to the total. (The method would need to know to get the numeric value out of the Td or the text input.
On the onchange event of the textbox, call the method again.
ASP.NET 1.1 - I have a DataGrid on an ASPX page that is databound and displays a value within a textbox. The user is able to change this value, then click on a button where the code behind basically iterates through each DataGridItem in the grid, does a FindControl for the ID of the textbox then assigns the .Text value to a variable which is then used to update the database. The DataGrid is rebound with the new values.
The issue I'm having is that when assigning the .Text value to the variable, the value being retrieved is the original databound value and not the newly entered user value. Any ideas as to what may be causing this behaviour?
Code sample:
foreach(DataGridItem dgi in exGrid.Items)
{
TextBox Text1 = (TextBox)dgi.FindControl("TextID");
string exValue = Text1.Text; //This is retrieving the original bound value not the newly entered value
// do stuff with the new value
}
So the code sample is from your button click event?
Are you sure you are not rebinding your datasource on postback?
When are you attempting to retrieve the value from the TextBox? i.e. when is the code sample you provided being executed?
If you aren't already, you'll want to set up a handler method for the ItemCommand event of the DataGrid. You should be looking for the new TextBox value within that method. You should also make sure your DataGrid is not being re-databound on postback.
I would also highly recommend reading through Scott Mitchell's excellent article series on using the DataGrid control and all of it's functions:
https://web.archive.org/web/20210608183626/https://aspnet.4guysfromrolla.com/articles/040502-1.aspx