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 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 )
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 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?
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 control that I'm using to display cache data to the end used on a web form. The issue that I'm having is that every time I re-run the application, and the cache data is re-generated... it loads duplicate data that's being displayed to the end user. I can't seem to figure out how to keep this from happening.
What I would like to have happen is that only unique data rows be returned and cached for the end user. Unless there are new data rows on the database that needs to be included in the cache data results...the previous data results should not be duplicated. I've tried to change a few properties on the datagridview control, but nothing seem to keep this from happening.
How to generate Radio button list based on data fetched from server in front of gridview,i am facing problem in generating a particular no. of Radio Buttion list as per the data fetched.
Suppose if i fethed 20 records then 20 radio button lists should be generated.
and the values like a or b or c should be submitted in the tables.
I am having some difficulty enabling sorting on a gridview that has data in it that has come from an objectdatasource.
The AllowSorting="True" function doesnt work for ObjectDataSource so I need to find a work around...I am guessing that I will need to do something in code in order to get this off the ground.
I have a dataview running a stored procedure that's populating a textbox. I then want to edit (or not) that text and insert it using another query. However, whenever I populate the text box, it will always insert the original text. If i don't populate it, it will insert whatever text I input.
In my webpage there are some dropdown controls bounded by object datasource with postback= true.
By default there is a value (CurrentDate) selected in one of the dropdown.
To display data there is a gridivew.
When the page is loaded by default gridview is populated with some data as per currentdate.
In same page there is an image to export data to Excel. By default I mark this image's visible= false.
Therefore if the data is populated then the image should be visible to everyone to download data to Excel, if not populated then it should remain hide.
For this purpose I used this code:
[Code]....
But exactly don't know where to write above code. If I write in Page_Load event then on runtime it displays error that:
Value cannot be null. Parameter name: Statement_Date
m using a listview and an object data source in my application, with optimistic concurrency control.i have only 2 columns in the listview: category_ID and category_name;when i try to delete an item, an error message is generated saying that one of the old values populated by the list view is null, i performed debugging, and found that the category_ID old value is populated correctly, while the category_name old value is populated as nulli can't find a problem in the code, i executed the delete command in the query builder directly and it worked fine,
I have a gridview which contains a templatefield. Inside this is an ImageButton and a dropdownlist. This is all created in the aspx page, although the ddl list items are populated in the RowDataBound event in the vb page. When i change the selected item in the drop down list and hit the imagebutton, the selected item is not maintained after postback. Instead the first record is displayed in the dropdownlist. I have wrapped an If Not Page.IsPostback around the datasource and databind's but this doesn't help. I have tried enabling viewstate in all areas on the page too, but still nothing. The list items for the ddl must be created on RowDataBound also. As far as I am aware, my ddl is not really dynamic, its just the list items which I add in the code behind which are classed as dynamic.
I have a gridview thats being populated from an excel file that is loaded through a fileupload control. I want to save the contents of that gridview to a table in my SQL database. I've searched the web and tried to loop through the gridview, but failed at it.
I'm a little new in ASP.NET, so i don't know how the .NET machine fully works..I'm using two strategies to solve my problem, both invoked by a Button.Click event, but i don't know which one is better..My worries are about the server overload and page load time.This is the regular approuch i've used..
[Code]....
The second one is by using a funtion (named checkIfNumberExistsInDataTable) that does a binary search in a datatable to find a number
conn.Open() Dim dr As SqlDataReader = cmd.ExecuteReader Dim da As New DataTable()
I am trying to simulate the file system like explorer using a treeview. I would like to have the application in the server but is the starting root limited to where the application is? Is it possible to have a certain directory in the server to be the starting node? I would like to be able to set a starting node in the config.
the problem is actually in the subject. I have custom control that uses treeview. The control is added dynamically. Nodes for this treeview are populated on demand. Treeview nodes can be checked. I recreate this control on page load event, but still CheckedNodes is empty if checked nodes were added dynamically (added on demand).
