Forms Data Controls :: DataSet And Looping Through Rows / Display Job Vacancies By The Result Of A DropDownList Value?
Jul 14, 2010
I am having a problem with this code, i had a post on this however this code is slightly different to that so i thought i would post a spearate thread.
Anyway, what i am trying to do is display job vacancies by the result of a DropDownList value. Now each job name has a description. The problem i am having is i need to display the results in this logic:
Job nameJob descriptionJob location. But what is happening is the job description (body) is repeating the more vacancies there are. This is the page:
http://kidsunlimited.co.uk/vacancies_test_two.aspx
If you select Deputy Nursery Manager from the DropDown and hit the Search button you will see the results. After listing the first two locations the description is repeated and then the 3rd location is shown after this. This is my code:
[Code]....
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Jul 1, 2010
I have this ListView that has a Drop Down List.Everything works fine (I think/hope) except that the drop down list are not showing its result correctly.This is the code.
Front-End
[Code]....
The code behind consist of the page_load and the ItemDataBound
[Code]....
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May 9, 2010
I am trying to add the checked rows into the database by looping through but im getting this error:
Object reference not set to an instance of an object.
Description:
An unhandled exception occurred during the execution of the current web request. review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.
Source Error:
[Code]....
Heres my add click event:
[Code]....
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Mar 2, 2011
I have a Gridview that has Paging enabled, and I need to loop through all the rows of the data. Therefore, I assume I need to loop through the datasource instead of through the Gridview.
I change the datasource of my gridview at various times when running.
How can I get a DataView of the GridView's current DataSource, so that I can loop through it?
Something like:
Dim dv as DataView = DirectCast(GridView1.DataSource, DataView)
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Jan 12, 2011
I have a gridview which I am using to display a dataset result. The problem is I am using paging in it. But when I click on the page # it says that I haven't handled the event. Do I need to rebind the dataset?
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Jan 12, 2011
Below is the result set when I execute my stored procedure. Based on condition no.of rows will change. I am using typed dataset to store result set.
NSV QTY MONTH/YEAR
264.95 31248 APR/07
273.23 34044 MAY/07
230.96 22232 JUN/07
711.93 81992 JUL/07
427.23 50345 AUG/07
297.90 36961 SEP/07
495.37 43079 OCT/07
648.48 52428 NOV/07
622.06 46364 DEC/07
407.02 46461 JAN/08
605.45 73439 FEB/08
224.81 28121 MAR/08
308.12 33356 APR/08
328.22 35605 MAY/08
372.41 34107 JUN/08
I have to show above result in RDLC file Like below.
APR/07 MAY/07 JUN/07................JUN/08
264.95 273.23 230.96.................372.41
31248 34044 22232 ...............34107
RDLC report? If I use table control,
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Jan 14, 2010
I'm using a table adapter to perform my queries. I'm sure I'm missing something really easy, but I can't figure out how to return the number of rows returned from a query to a dataset used for a GridView.Basically, I want to display a message "No records exist for your selection" by testing for ReturnedRows = 0.
Excerpt of C# code:
handoutDSTableAdapters.handoutTableAdapter handoutsAdapter =
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Jan 12, 2011
Below is the result set when I execute my stored procedure. Based on condition no.of rows will change. I am using typed dataset to store result set.
NSV QTY MONTH/YEAR
264.95 31248
APR/07
273.23 34044
MAY/07
230.96 22232
JUN/07
711.93 81992
JUL/07
427.23 50345
AUG/07
297.90 36961
SEP/07
495.37 43079
OCT/07
648.48 52428
NOV/07
622.06 46364
DEC/07
407.02 46461
JAN/08
605.45 73439
FEB/08
224.81 28121
MAR/08
308.12 33356
APR/08
328.22 35605
MAY/08
372.41 34107
JUN/08
I have to show above result in RDLC file Like below.
APR/07 MAY/07 JUN/07................JUN/08
264.95 273.23 230.96.................372.41
31248 34044 22232 ...............34107
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May 7, 2015
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Mar 4, 2013
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Dec 31, 2010
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[Code]....
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Jan 9, 2011
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Aug 11, 2010
I have the following line of C# code that successfully returns the results of a stored procudure via a DAL:
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May 7, 2015
DataSet ds = new DataSet();
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qry += "'";
ds=mvl.GETDS(qry);
foreach (DataRow dr in ds.Tables[0].Rows)
{
TextBox2.Text = dr["present"].ToString();
TextBox12.Text=dr["Name"].ToString();
TextBox13.Text=dr["Section"].ToString();
}
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Nov 19, 2010
I have a Gridview and two link button in that GridView , one link button click is to add edit row ( Edit ), one link button click is to select row ( Select ). I have a dropdownlist inside row which selected when i click link button Select in the gridview edit template, as of my business logic i need to show the dropdownlist only when the user clicks Edit button and when the user clicks Select button . That mean when the user clicks Select button then they clicks Edit button on the gridvview i should allow him to edit the dropdownlist (showing the value to the user through a label).
ASPX CODE
[Code].... C#
When I click Select link button , then I click Edit link button . They have errors : Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index" I don't know what error?. How to fix it
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Jul 28, 2010
I'm a complete novice in .NET. I am trying to implement a multi textbox / dropdowns / checkboxes search for a website using vb.net. How do I pass the values of my form fields to my griedview and display the search result on the same page?
I've written a stored procedure and specified it as data source for my gridview and defined parameter source as my CONTROLS (textboxes, checkboxes n dropdowns) on the form. What I want is when a user fills out one or multiple fields on the form, how do I display data in the gridview on the click of SEARCH button? Also is it necessary to write a codebehind for my search button or we can achieve the desired result in some other way?
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Jul 4, 2010
I have a gridview with a Date column showing (month/day/year), I would like use a dropdownlist with items in Month to filter the Gridview rows.
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Jan 21, 2010
I need to know how to display a single row(or particular row)from dataset and display into gridview... i tried by using some codes, like the following, If strCourseLevelId <> "" Then Dim ds2 As DataSet Dim currentbundlenid As Int16 Dim prevbundleid As Int16 = "0" Dim bundlenos As Int16 = "0" Dim bundlecontent As Bundledata = New Bundledata ds2 = bundlecontent.GetBundleData(strCourseLevelId) If ds2.Tables.Count = 1 Then If ds2.Tables(0).Rows.Count > 0 Then With ds2.Tables(0) Dim strCnt As Int16 For strCnt = 0 To .Rows.Count - 1 With .Rows(strCnt) currentbundlenid = .Item("Bundleid") If currentbundlenid <> prevbundleid Then bundlenos = bundlenos + 1 End If If bundlenos = "1" Then GridView1.DataSource = ds2 GridView1.DataBind() ElseIf bundlenos = "2" Then GridView2.DataSource = ds2 GridView2.DataBind() ElseIf bundlenos = "3" Then GridView3.DataSource = ds2 GridView3.DataBind() End If prevbundleid = .Item("Bundleid") 'next write the main page content End With Next End With End If End If.
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Aug 10, 2010
So I have a dropdownlist and I'm trying to populate it with values in the database. For some reason, half of the rows has no value. It's happenning in a sequence as well, like the first row has no value, then the second row has value, then the third hasno value....
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Oct 30, 2010
I'm trying to filter data based on the selected value from a drop down list and the according values of a local variable within a gridview_rowdatabound event. For example, if "In Arrears" is selected, the gridview should return all rows where the account balance is less than -100. So far, when I select a value from the dropdown list, it has no effect on the gridview. Here's the code I have:
If (DropDownList1.SelectedIndex = 0) Then
e.Row.Visible = True
ElseIf ((DropDownList1.SelectedIndex = 1)
And (AccountBalance <= -100))
Then
e.Row.Visible = False
ElseIf ((DropDownList1.SelectedIndex = 2)
And (AccountBalance > 100)
And (AccountBalance < -100))
Then
e.Row.Visible = False
End
If
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Feb 11, 2010
Is it possible to add values from different database rows to a dropdownlist?
I'm currently trying to add both ItemSizeSmall and ItemSizeMedium, but through trial and error I can still only add one row from the database. I want the dropdownlist to display "Small" and "Medium" etc.
I guess my primary question is: How do I create a database with product size attributes?
I apologize if this thread should be in another forum, but if the dropdownlist can display two database rows I'll settle with that solution.
Could the database look like this:
table1: product
PK: productID
table2: productAttribute
PK: productID
PK: attributeValueID
table3: attributeValue
PK: attributeValueID
FK1: attributeNameID
table4: attribute
PK: attributeNameID
name
If this is right: How do I make the dropdownlist display the different sizes?
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Aug 23, 2010
I have the following code:
using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using Oracle.DataAccess.Client; // ODP.NET Oracle managed provider
using Oracle.DataAccess.Types;
namespace MyTestApp {
public partial class _Default : System.Web.UI.Page {
protected void Page_Load(object sender, EventArgs e) {
OracleConnection conn = new OracleConnection("User Id=UID; Password=PWD; Data Source=XE; Pooling=false"); try { conn.Open(); } catch ( OracleException oe ){
Console.WriteLine("ERROR : " + oe.Message); }
if ( !Page.IsPostBack ) {
if (conn.State == ConnectionState.Open) {
// get data GetMoleculesToShow(conn); } }
// clean up connection conn.Dispose(); }
static void GetMoleculesToShow( OracleConnection conn ){
String division; String rxotc; String molecule_name;
String prodnum; String proddesc; String molecule_class; String nonactive;
// create command object and set attributes
OracleCommand cmd = new OracleCommand("schema.package.procedure", conn);
cmd.CommandType = CommandType.StoredProcedure;
//Bind values
cmd.Parameters.Add("mol_to_show_cur", OracleDbType.RefCursor);
cmd.Parameters[0].Direction = ParameterDirection.Output; try {
// Execute command, have parameters populated cmd.ExecuteNonQuery();
// Create OracleDataAdapter, data provider object to populate dataset
OracleDataAdapter da = new OracleDataAdapter(cmd);
//Populate dataset with "molrefcur"
DataSet ds = new DataSet();
da.Fill(ds, "mol_to_show_cur", (OracleRefCursor)(cmd.Parameters["mol_to_show_cur"].Value));
//Verify dataset is begin populated //DataTable dt = ds.Tables[0];
//foreach ( DataRow dr in ds.Tables[0].Rows ) //{
// division = dr["division"].ToString();
// rxotc = dr["rxotc"].ToString();
// molecule_name = dr["molecule_name"].ToString();
// prodnum = dr["prodnum"].ToString();
// proddesc = dr["proddesc"].ToString();
// molecule_class = dr["molecule_class"].ToString();
// nonactive = dr["nonactive"].ToString(); //}
if (ds.Tables[0].Rows.Count != 0) {
// display dataset values GridView gvMolecules = new GridView();
gvMolecules.DataSource = ds.Tables["mol_to_show_cur"].Rows;
gvMolecules.DataBind(); } }
catch (OracleException oe) {
Console.WriteLine("ERROR : " + oe.Message); }
finally { cmd.Dispose(); } } } }
The dataset is being populated, however when the page renders, the data nor the gridview are visible. I have tried using both IE and Firefox, binding / not binding the columns, AutoGenerateColumns Y / N with no success. As I am new to all of this ( VS2008, ASP.NET, C# ) I can't help but to think I am overlooking something basic.
I am using the following :
- VS 2008
- MS Vista SP2
- Oracle XE ( local )
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Dec 10, 2010
I have a set of dataset with different column retrieved from DB. I need to present the datasets in one GridView (or other ListView etc...) without specifying the column_header. It should present automaticly since the GridView is bind to the DataSet.
In additional, I want this GridView to handle multiple rows edit and update the dataset, idealy, show data in textboxs in initially.How could I set the GridView to edit_model without hardcode column_header and textboxs in 'itemtemplate' or filed.
How could I achieve the bulk edit and update, so that I can assign 'mydataview1.table' to the dataset.
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Jun 22, 2010
I have a listview that is showing its result by using a linq query. The linq query goes like this.
[Code]....
* db.Varer: Varer is a table that contains basic product information like proudct name, product nr. etc. ** a.fk_kategori_id == CatParamId : I'm just saying limit the result according to the Category ID (a.fk_kategori_id). The category id is coming from a dropdownlist (CatParamID) *** Join: Besides the Varer (Product) table I also have another table, Sizes. This Sizes table contains 6 columns (ID_Sizes (int) primary key and the columns: OneSize, S, M, L, XL, XXL all are bit (true or false)). There is a relationship between Varer table and Sizes table. It says that I can only insert a value into the "fk_sizes_id - column" of varer table if that value already exists as primary key within the Sizes table. **** I'm starting by picking basic product values like productId, ProductName etc from the Varer (a) table ***** Then I'm picking the corresponding Sizes values (onesize, s, m, ...) from the Sizes table. Now within my ListView I'm showing the above result by using Eval, like this.
[Code]....
And this works perfectly, but now comes the thing that is causing me trouble. I have the below drop down list (still within the ListView ItemTemplate):
[Code]....
I want this drop down list to be populated with only those of the "linq query's Sizes table result" that are true. By "Sizes table result" I mean these
[Code]....
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