Forms Data Controls :: Pulling Data From Gridview To Use In Same Row
Oct 7, 2010
I use a gridview with products, in which one column lists the manufacturer, and the next colum lists the item number.This gridview works fine, but now I want to add a product image on the same row. Instead of using a stored image location, I simply want to make a link to the image like this:
"www.mywebsite.com/images/manufacturer/itemnumber.jpg "where the manufacturer and the itemnumber are the same as displayed in that particular row in the manufacturer and itemnumber columns. I am not versed well enough (yet???) to reuse the data from those two columns.
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Apr 28, 2010
I have a templated control embedding a checkbox in a GridView I have an event on the checkbox which has a loop that pulls ALL of the checked checkboxes and the associated value. I only want to pull the datavalue of the checkbox that I just checked but the properties/methods associated with that checkbox event are not giving me any sort of index or item.value from which to do this.
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Aug 31, 2010
I am currently adding checkbox functionality to a system. I would like to check a group of users and add them into a db table. I currently have the administrator values flowing into the db table fine but it will not insert the empID into the table from the gridview. Here is my code:[Code]....
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Jun 28, 2010
I'm trying to pull a value from a Gridview so that I can create a running subtotal. I've looked at a number of examples but they all seem to fail.
Why does this not work? Each and every reference I try to make to the cells "value", comes up null.
Sample code1:
[Code]....
Sample code2:
[Code]....
In sample code 2, I get the "header text" for the column...but I know the value in the cell...so it fails on a data conversion.
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Nov 23, 2010
I have a GridView, bound to a table (Meals) in a SqlDataSource.
Into that GridView, I have added a TemplateField, which contains a DropDownList (which displays the numbers 1 - 10, added manually; no Data Binding). And, I've added a ButtonField.
When I click the Button, I want the values of some of the GridView rows PLUS whatever value was selected in the DropDownList to be pulled out and stored in a second Sql table (Orders).
Pulling the rows bound to the SqlDataSource is easy but JavaScript is needed (I think) to pull the SelectedValue from the DropDownList. I understand women more than understand JavaScript (that's how little I know) and the code below has been kindly offered by another forum user who is at a loss, himself, now.
Here's the code and the error message I'm getting.
ASPX:
[Code]....
And here's the Code Behind:
[Code]....
No design time errors reported but here's the run time error:
Object reference not set to an instance of an object.
On the following line:
Line 28: if (row.RowType == DataControlRowType.DataRow)
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Feb 1, 2011
Using a class component, an Object data source and a formview I am successfully pulliing data from a SQL database. In some cases the rows contain one or more Null values and I would like them to be ignored completely. My simple code follows:-
<%# Eval("add_1") & ","%>
<%# Eval("Add_2") & ","%>
<%# Eval("Add_3") & ","%>
OUTPUT:-
Rose Cottage, 123 New Road, Margate,
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Jan 7, 2010
Im generating reports with around 8000 to 10000 records in grid view , my page give me time out error if data exceeds and it gives time out exactly after 30 secs.i have given command time out = 0 in webconfig file , but it still gives me the error . i have been using command time out property in code behind also
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Feb 3, 2010
I currently designed a school result portal. If the students want to view their result, they input their student school number in a text box to search out their result. But this is not secured because anybody can look up any students result if you have the number which is even written on their school uniform for identification.
I have being trying to secure this result by trying to generate or code special numbers that the students will input with their school number. The special numbers will be random numbers and may be from 10 and above, it might even contain letters. How do
I code this. I believe this is the best asp.net forum. I want the students to be inputing this special unique numbers and their student numbers so that there result will be avaliable to them.
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Jul 22, 2010
I have this simple project which needs to show location on a google map by pulling data from the DB.I am using asp.net, mysql DB, google map and i found out from some website that i needed to use ajax.
The process is like this
1. I have a event form where i have multiple fields to fill in and it includes a Location/Venue fields which i can enter a location by Name(Not the Co-ordination). I am located in Singapore. So all fields will be stored into the DB.
2. I have a webpage displaying a table of the data from the same DB, and it comes with a embedded Google Map. On the table, the value of the Location column will be Hyperlinked, and when i click it, it will act as a search query in the embedded google map and locate the address without reloading the page again(which i believe i gotta use iframe?)
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Jul 15, 2010
I am working on an asp webform that pulls from an ODBC datasource then puts the data in an sql server. Once the data is in the sql server several queries pull data from it to provide information for a report.
This is an example of what I am talking about
private
void ODBCpdEmployeeAb()
{
DataTable dt =
new
DataTable();
[Code]....
The first part gets the data from the ODBC connection and the next part stores it in an sql server table. The problem is I have these methods in the page load event of the webform so everytime it loads it just puts the exact same data in the sql server table which would then provide incorrect information on the report.
Is there a way to append the most recent data from the ODBC table to the sql server ?
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Feb 17, 2010
I was hired to do some contract work for a short contract. I am looking at this code on this Aspx web form. What they do is load the labels for a radio button list from an ObjectDataSource object. Well this is the first time I have ever heard of an ObjectDataSource. The problem is that I don't even know where this object is pulling data from. With a SqlDataSource object, I can easily view the flyout menu to see the sql query where the data is being pulled from. Anyway, I need some figuring out where objectDataSourcePlanType lives and where it is pulling data from. I know I can't list the entire project, but I am sure someone who is familiar with ObjectDataSource
<tr>
<td>Type of Plan</td>
<td><img alt="Required" src="/Images/arrow.png" /></td>
<td>
<asp:RadioButtonList ID="radioButtonListPlanType" runat="server" AutoPostBack="True" DataSourceID="objectDataSourcePlanType"
DataTextField="PlanTypeName" DataValueField="PlanTypeId" OnSelectedIndexChanged="RadioButtonListPlanType_SelectedIndexChanged"
RepeatColumns="1" RepeatDirection="Vertical" AppendDataBoundItems="true">
</asp:RadioButtonList>
<asp:RequiredFieldValidator ID="requiredFieldValidator10" runat="server" ControlToValidate="radioButtonListPlanType" ErrorMessage="Type
of Plan is required."
SetFocusOnError="true" />
<asp:ObjectDataSource ID="objectDataSourcePlanType" runat="server" SelectMethod="ListPlanTypes" TypeName="Candle.Web.PlanRequest.CommonWeb">
</asp:ObjectDataSource>
</td>
</tr>
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Jun 14, 2010
I have written a web scraping program to go to a list of pages and write all the html to a file. The problem is that when I pull a block of text some of the characters get written as '�'. How do I pull those characters into my text file? Here is my code:
string baseUri = String.Format("http://www.rogersmushrooms.com/gallery/loadimage.asp?did={0}&blockName={1}", id.ToString(), name.Trim());
// our third request is for the actual webpage after the login.
HttpWebRequest request =
(HttpWebRequest)WebRequest.Create(baseUri);
request.Method = "GET";
request.UserAgent = "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1)";
//get the response object, so that we may get the session cookie.
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
StreamReader reader = new StreamReader(response.GetResponseStream());
// and read the response
string page = reader.ReadToEnd();
StreamWriter SW;
string filename = string.Format("{0}.txt", id.ToString());
SW = File.AppendText("C:\Share\" + filename);
SW.Write(page);
reader.Close();
response.Close();
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Dec 21, 2010
I'm getting ready to start a C# web application project and just wanted some opinions regarding pulling data from a database. As far as I can tell, I can either use C# code to access the database from the code behind (i.e. LINQ) of my web app or I can call a stored procedure that will collect all the data and then read it with a few lines of code in my code behind. I'm curious to know which of these two approaches, or any other approach, would be the most efficient, elegant, future proof and easiest to test.
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Jun 24, 2010
I have a page that displays updated data every few seconds but instead of pulling data from database, I would like DB to push data only if the data has been changed. Is that possible?
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Sep 19, 2010
I am trying to avoid enabling EnableViewState..Sample code as you can see has 1 repeater and 2 textboxes inside. I bind the textboxes at page init. After a postback I want to get the updated data from the client & save in a db. The Request.Form contains the data keyed with autogenerated client ids but the repeater has 0 items after the postback. So my options seem limited to.a. Enable viewstate so I can pull the data from the repeater using Control.Find(...)b. iterate through Request.Form and find my textbox values...ultimatly the goal is to to render data from a datatable to some textboxes, allow the user to make changes then save these changes. I'd like to avoid viewstate if there is a clean alternative..ASPX:
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Foo.aspx.cs" Inherits="Ads_Foo" EnableViewState="false"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-
[code]...
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Feb 1, 2011
So I have been trying to follow serenarules posts about persistence layers, but I seem to be missing something.
The persistence layer is an architectural layer whose job is to provide an abstract interface to information storage mechanism(s).
This makes sense to me, but I am still having a hard time with this.
So in what cases is this necessary? When you are pulling similar data from multiple information sources?
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Feb 25, 2010
we have a program that we work with with in 2 different locations, both of the program instances must share the same database.what i did is to open Web Sharing folder on our server then i added on both computers this folder to their "My network places" and direct both of application to this folder which contains the database.this is how i direct the program :
Code:
D:WNKKWnkk.exe \MyServerktest
nk2008
it all works fine but there is one problem, the data pulling is pretty slow when it shouldn't we have 100MB download / upload on our server and over 10MB dl/ul in our office.
some pointers:i added the shared web folder to one of our website directory and thats mean that the port the program is using is 80
is port 80 is slower then others?
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Jan 11, 2010
How to display empty GridView to insert new record if no data retreived for some record on the result from data table?Actually i am trying to give a user an option to add recrod from Gridview. On result of some query it is perfectly displaying data and a footer row with the insertion textbox but when there is no data in the gridview it is not displaying. It should display with footer having insert textbox.
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Jul 31, 2010
I am unable to access the data in the gridview's selected row. I have done this lots of times but must be forgetting something.
Here is my gridview:
[Code]....
[Code]....
[Code]....
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Apr 7, 2010
I have loaded up a gridview object with data. I have turned on Edit on the grid. It lets me edit the data, but I also want to put some code to check for correct data in each field. I tried to assign a requiredfieldvalitor, comparevaliditor but they don't work. Is there an event I can capture to fire up some code before the grid sves my data?
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Mar 30, 2011
This is my code and i am only able to edit the one data under the category school.But what i nd is to edit the other categories like the name,email...etc..how do i modify my code in the update command.Another thing is to delete the data how do i do that?
[Code]....
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Jan 17, 2010
I have a customized gridvew i.e. grvResult. There is a textbox and a InsertButton in the footer.
If there is a data populated into gridview it is showing GridView footer and inserting data but if there is no data in gridview then its footer also not visible.
I have tried in two ways to make footer visible but it is showing following error:
Object reference not set to an instance of an object.
Tried ways:
[Code]....
[Code]....
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Jan 11, 2011
regarding getting data from XML file and binding gridview with data .
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Aug 10, 2010
pull some data from this grid view, and then update all pulled grid view data value to tableTwo.Update tableTwo set uit = Grieview.NewSid where con = 'Gridview.pid' and unid = 'Girdview.Gid' + 'Gridview.Tid'
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Jan 28, 2011
I was wondering if it is possible to add additional data to Excel document created from gridview. What I want to do is to manually add data to certain rows and columns (date, couple of titles, etc), but I'm not sure how to do it.
Currently I'm using the following code:
[Code]....
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