Forms Data Controls :: How To Access The Values From Datagrid
Jan 1, 2010
I am creating a web page where i need to enter maks for the student of a class. So i queried the students regno from the database and bind it to the datagrid and i've added a template column which contains the textbox to enter the marks of the student...
The problem i face here is whenever i take the value from the textbox(template column) using theFINDCONTROL it returns only the NULL string...i have given here my code
[Code]....
the value is null even if we enter some values in the textbox
I had called the data from query to data table and now i have a gridview in which i am using one datalist and 2 text boxes and and reming coloumns are bounded iahve to assiaign them values which datatable have either null or any value.
i have a DatagridView which contains 5 columns. The Fifth Column can contain a number or a NULL value .
I need to edit the DataGrid it in such a way that the fifth column is hidden everytime.
And on a specific condition that if fifth column is not null , then display the value which is present in fifth column ,in a small subscript below the the corresponding element in first column .
Im basically listing a set of facilities in a datagrid. Like so:b Projectorcb Laptopcb TelevisonIn roomview, a check appears where a facility is availble in a room. This part works fine.The user can then edit the facilities, by clicking on the check beside each facility. When the update button is pushed I need to record the value of the checkbox, however I cant get the value of the checkbox.eres my codebehind:
I put a link on a datagrid that when loaded is attacehd to a url from the DB. Well when the Db holds nothing for that URl I need to be able to redirect to antoher page. Here is what I have so far. But It does not work, still using asp.net 1.1. Am i doing this correct or is there a different way.
I'm trying to populate a datasource for a dropdownlist (which is actually in an insertitem template field within a detailsview on the same page) with a selectedvalue from a gridview. When I select a row in my Gridview 1, I get the "no value for a required parameter" message. ( and I have tried various alternatives... setting the selectedvalue of the grid to a variable... setting the selected value of the grid to a textbox nothing seems to work. It seems like this should be a pretty simple thing. I think I'm missing something obvious! Here is my code:
Field in Details view to be populated by the datasource:
I have take a datagrid view and now i want to update the records as the database is been normalized i need to enter the multiple rows at once. How you I convert the datagrid to enter the data so that it would be easy for me to update the records?
I have a datagrid whose columns are autogenerated (based on the results from an SQL SELECT query). However, I need to retrieve values from certain cells across the datagrid, using the following code to step through the results.
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I need to specify all my columns using TemplateField?
Used onprerender a lot with dropdownlist boxes never used with textboxes.I have two currencies used in my application, want to format before i show to use.
I want to dynamically bind dataset values into datagrid's header datafield.
Is it possible? To be more clear, when you click on datagrid's (Collection) from properties window, you get selected columns created from Bound column. So in those columns I want to dynamically display dataset's table values in those columns.
i.e like ds.Tables[0].Rows[0][0].
Is it possible to do it in Datagrid ItemDataBound function like,
e.Item.Cells[1].Text = ds.Tables[0].Rows[0][0]
or something like this? I know the above code is wrong and wont work since I tried it out and while building it throwed error saying, Cannot implicitly convert type 'object' to 'string'.
I know how to handle the filtering of the grid (create a criteria and set to rowfilter of the dataview) But, I dont know how to get the value of the column of the selected row.
I've created a gridview having an Id column whose visible property is set to false, because I don't want users to see that column. Now when user clicks on the edit button in a particular row I want to fetch the id of the cell in the Id column of that particular row. So, for that purpose I used -
In the above code, Cells 0th index is the column index whose visible property is kept false. Now the problem I face here is that if the columns visible property is true then I can easily fetch the contents of that particular cell with the above code. But, in invisible mode I get only "" value i.e. I don't get the text or the content of that cell. Why does it happen? I don't face this problem with DataGrid Control used with 1.0 and 1.1 version. And how to resolve it or in this case is there another way of fetching the content of the invisible cell?
I have Datagrid , i want to clcik on row and get data in textbox , but my textbox is FreeTextBox control,i tried to use javascript but work for asp.net control not working for freetext box control, how i can capture this code is sample code but it work for asp.net control but not working for my freetextbox
Simply put... I want to duplicate the example found at this link, in VB.net rather than C#.
[URL]
I would like the selectedvalue of the dropdown to display additional data base on its selection in multiple text boxes.
I have tried using the DropDownList OnSelectedIndexChanged property, within a DataGrid EditiItemTemplate, but I cannot retrieve data from the selection. (AutoPostBack is "True"). I can however use a button onclick event to fire a "prre-defined" selection value.
I have 2 datagrid (using .net 1.1). I need to access column of second grid ( i need to make a column of second grid as disabled) when i click "Cancel" link button in First Grid. How can this be done?
how I access /retrieve values of checkboxlist inside a repeater? My code is below..is it the same as if it was not inside a repeater? My other concern is how do I distinguish these checkboxes because basically what 's going to happen here is based on which checkbox is selected I need to query an xml file to get the location of a folder which I'm then going to zip up and allow user to download..So here's the breakdown. I have an accordion panel using jquery ui. Each panel hold a product and each product has the same checkboxes..so depending on which product the user wants to download files for which he/she will indicate by opening the accordion panel for that product and checking which checkboxes/file they want to download . So how will I know which product the user clicked the checkboxes for being that I'm using this repeater which just one ID?
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can I still use this code or will it not work cause it's inside a repeater..also I was going to use jquery to add an onclick event to the checkbox so how can I do that now with me using this control?
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Here's another issue..I can't even assign values to the checkboxlist using databinding..so how am I suppose to do this.. Server Error in '/ArchitectView' Application. Parser Error Description: An error occurred during the parsing of a resource required to service this request. Please review the following specific parse error details and modify your source file appropriately. Parser Error Message: Databinding expressions are only supported on objects that have a DataBinding event. System.Web.UI.WebControls.ListItem does not have a DataBinding event.Source Error:
I have a datagrid "dgParents" and inside this datagrid I have another datagrid "dgChildren".
In dgChildren I have three dropdownlist drp1, drp2, drp3.
I have a button"Save"
I am able to populate data.
Now User selects any value from dropdownlist of dgChildren and click button "Save".
I have a function in code behind for button click here I want to access the values of drpdownlists that are in dgChildren so that I can save in thesevalues in db.
I'm not able to acess the vlues of dropdownlists that are in dgChildren.
I tries findcontrol and controls etc but didnt work.
I'll really appreciate any help for sample code/tutorial/.
I have "Order" object with Columns Ticket,OTP and CustomerName etc.Intially on DataGrid, I'm binding Ticket only , when user clicks on "Column Chooser" button, another windows appears to pickup CustomerName,OTP columns to add specified column dynamically on Datagrid. Environment : Asp.net ,C# with Object Data source
Public Class Order { publc void Order() { } public string Ticket { get { return this.strTicket; } set { this.strTicket = value; } } public string OtpNumber { get { return this.strOtpNumber; } set { this.strOtpNumber = value; } } public string CustomerName { get { return this.strCustomer; } set { this.strCustomer = value; } } } }
I'm bounding data to repeater control by using SqlDataSource Control
bounded data is something like this:
attributeid attributename 1 color 2 size
How can I get access to attributeid values in Repeater control's ItemDataBound event handler,
I tried to use DataBinder.GetPropertyValue(container,"attribuetid"), but I can't set container, am I doing right, or maybe I should use another approach.
In the code behind, the Control returned by FindControl is null. Why? How can I access the buttonMoveUpFormField and buttonMoveDownFormField controls? From the code behind, is it possible to access controls which are declared in the ItemTemplate section of the TemplateColumn section of a DataGrid?
but it is throwing as exception Object reference not set to an instance of an object.How can I access user control's gridview control from parent page?
