I have a list item collection. How to add this list item collection to a datatable.
The list item collection has the following fields:
Student Name, Maths Mark
John 20
Mac 30
John 35
I want to create a html table from the data table, which is grouped on the Student Name field.
I have one problem with my shopping cart that I really can't figure out all by myself.I want, if a item already exist in the datatable, the quantity to be updated for that item with the new number instead of creating the same item again.I have done a foreach loop because I think that is where I should start.Notes: MyRow[3] is the column holding the quantity.Code:
[Code]....
//Bengt
I have a gridview in which one of the columns is a DropDownList.
In another column I have a TextBox and a button next to it.
I want to use the OnClick event of the button to add the text in the The TextBox as a new list item in the DropDownList of that row.
I've this code wit no success:
protected void btnAdd_Click(object sender, EventArgs e)
I'm looping through an ArrayList and creating a column in a DataTable from each field. One of my fields is a DateTime field, and I've noticed that when I create the columns, it's being changed to a String, but I need it to still be a DateTime field for sorting. I'm trying to do this, but it's not quite working.
[Code]....
Maybe this could be a simple questino, but for me it's difficult to do this action: I have a table in sql server 2005 with some records stored, for example 10 records. The primary key of this table, let's call it "Employee", it's a number field with an autoincrement constraint. I want to store more data into the table by using a OdbcDataTable object and OdbcDataAdapter and adding new rows to the datatable and afeter that use the "Update" method from the OdbcDataAdapter object.
The big deal is this: let's suppose that I want a add a new record to the datatable object, using any method or code sequence that you want. if I have 10 records stored on the data base table, when I retrieve this table schema by using the OdbcDataAdapter "Fill" method, I have a copy of the data base table schema in the DataTable object, right?. if I add a new row on the datatable object, it's suppose that the primary key column of that table must AUTO-INCREMENT the value of the key, I mean if the last value that I store on the table was the number 10 on the PK field, when I add a new row on the datatable object, the PK value on the datatable object must be the number 11 if the autoincrement constraint is present into the DataTable object, but in my case, it doesn't work
So, How can I define the conditions or set the c# data objects properties to wor in that way???. In this moment the PK column on the odbcDataTable doesn't auto-increment its value when I add a new row on it.
Please helpe with this.
PD: I have another question about the DataTable object, how many records can store this object?? I have some problems with this because sometimes when I use the Fill() method to get data into the DataTable or a DataSet object there's no problem if the Fill() method retrieves about 142000 records, but when I retrieve over the 145000 records, when I inspect the DataSet or DataTable object by using the debuging mode, they have null value. Any of you can tell me why this situation ocurrs??
I need to limit the length of the string that load into a DataTable that is being used to display. The data I am loading is coming from another DataTable. How do I shorten row["CG_GalleryName"] contents to 24 characters.
Convert.ToString(row["CG_GalleryName"]) -- how do I set this length to 24 characters? Using it in the below code.
if (Convert.ToInt16(row["rnum"]) == 1)
{
dr = GLinks.NewRow();
dr["rnum"] = row["rnum"];
dr["L_URL"] = row["L_URL"];
dr["CG_GalleryName"] = row["CG_GalleryName"];
dr["L_Picture"] = row["L_Picture"];
GLinks.Rows.Add(dr);
I need to create an interface for adding users to .Net Membership DB through an existing database. My Idea is to read each row from database from existing users table in a datatable and then iterate through each row and add it to new database. I cannot directly copy the rows from existing users table because the password stored in .Net Membership provider is in ir-reversible hash code and hashing is done through encryption algorithm present in front end code. My User count is huge (in millions).So what should i use to read the records, Dataset or datatable. Also tell what is the max number of rows it can hold.
View 3 RepliesI have a datalist that gets data from my table . One of the columns is "LinkUrl"which holds a string link to another page.On my aspx page I have the data list and in the item template I want to make LinkUrl Clickable so it goes to the URL stored in the data table
( DataList1 )
( Item Template )
<asp:Label
ID="LinkUrlLabel"
runat="server"
[Code]....
I have written the piece of code below to get a productID from a gridView when the user clicks on the select link.
Convert.ToInt32(GridView1.SelectedDataKey.Values["productID"])))
However, if a user clicks on this more than one click the newer value replaces the previous. Is there a way to keep adding to the cart list when the user clicks on a new item?
Edit:
Here's my code for the Shopping Page:
[Code]....
I dont know if the location of creating the list is important? Wasn't sure if it was placed in the click event if it would keep creating a new instance?
Then for the Basket Page I have:
[Code]....
I have following two collections,1. CategoryList, 2. ItemList. I need to get the collection which contains the rows shown in below in "Expected Result List".could you please provide me the LINQ query on collections to get this resulted List?
[code]...
i have a radio button used for search parameter and one option i want to include is a select any or all. I tried using "*" and variations therein but nothing seems to work?
[Code]....
I inherited an application written for VB.Net and am converting it over to ASP.Net, with VB as the back end. I have a data pull that adds values to a new instance of a class, then adds the item to a listbox. It worked great in the VB.Net version, but I get the following error in the Visual Studio Text Editor when I try to use the code:
Overload resolution failed because no accessible 'Add' can be called with these arguments:
'Public Sub Add(Item As System.Web.UI.WebControls.ListItem)':Value of type 'MyItem' cannot be converted to System.Web.UI.WebControls.ListItem'.
'Public Sub Add(Item as String)':Value of type 'MyItem' cannot be converted to String.
I have played around with the code quite a bit and have been researching online, but I'm just drawing a blank here.
I put the class("MyItem") in the "App_Code" folder in a file called "MyItem.vb". The class code is as follows:
[Code]....
The code I have for the sub that is supposed to add the items to the listbox is as follows:
[Code]....
I have a gridview in which dtasource binded is a List which returns class type. If no records in list, I want to display 'No records found' in GridView.
[code]...
In else part, what code i have to write to get desired output?
Looping Through Checkbox List and adding selected items to MS SQL DatabaseI don't want to store it using comma deliminator.I will need to do a search on analyze which users have what music in common.The image above is from a tbl_lookup_music table I created. MusicID, MusicNow how should I build the logicIF we have a user that has a tbl_profile table. And listens to many different types of music. How should We store the data.------------------------------------------------------------------------------------------CREATE TABLE [dbo].[tbl_lookup_music]( [MusicID] [int] IDENTITY(1,1) NOT NULL, [Music] [nvarchar](64) NOT NULL, ---- Type of music. CONSTRAINT [PK_tbl_lookup_music] PRIMARY KEY CLUSTERED ( [MusicID] ASC )WITH(PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF,ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY] ) ON [PRIMARY----------------------------------------------------------------------------------------------CREATE TABLE [dbo].[tbl_Profile_Music]( [ProfileMusicID] [int] IDENTITY(1,1) NOT NULL, [ProfileID] [int] NOT NULL, [MusicID] [int] NOT NULL,PRIMARY KEY CLUSTERED ( [ProfileMusicID] ASC)WITH(PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF,ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]) ON [PRIMARY]GOHow should I setup this table.
View 4 RepliesI have a repeater control:
<asp:Repeater ID="rep" DataSourceID="XMLDSCompare" runat="server">
<ItemTemplate>
<h4><%# XPath("title")%></h4>
</ItemTemplate>
</asp:Repeater>
Now if its the first item in the total resultset, I want to add <div> to ItemTemplate control, if its the 2nd item, I want to add </div>
So output would be (not including table tags generated by repeater control):
<div>
title 1
title 2
</div>
<div>
title 3
title 4
</div>
<div>
title 5
title 6
</div>
How would I do this in the ItemDataBound event of repeater control?
After I execute a data reader and put the readed string from the database in my dropdownlistbox, I cannot add another item in it.Here's my code:
con.Open()
Dim com As New OleDbCommand("Select Status from Table where Id = 'somevalue' ", con)
Dim dr As OleDbDataReader
[code]...
here is the requirement:
i have a lable a textbox, and two buttons(+ and - button) on my asp.net page.
so when i click on the plus button it should add the the whole collection of controls to the page(i.e. lable, textbox and two buttons). And when i click on minus button it should remove the collection.
This should go on.meaning whenever i click on any plus button the control collection should get added to the page.
I am wondering what will be the best approach to do it.
As it stands right now, I have a literal control on my page. In my code-behind, I'm using StringBuilder to generate some JavaScript. Also on that page I have a item collection. What I want to do is for each item in my item collection, generate my literal which will in essence generate my JavaScript. Here is an example of my code-behind now. I'm ok with doing something different, but I just need to generate said JavaScript for every item in the collection and I'm not sure how to do it.
System.Text.StringBuilder sb = new System.Text.StringBuilder();
sb.Append("<script type='text/javascript'>");
sb.Append("mboxCreate("product_productpage_rec",");
sb.Append(""entity.id=" + _prodID + "",");
sb.Append(""entity.categoryId=" + _categoryID + "",");
sb.Append(""entity.name=" + _prod.Title + "",");
sb.Append(""entity.pageURL=" + Request.Url.ToString() + "",");
//The following value has been taken from the productImageControl code behind.
//Might have to refactor in future as a property of the image control.
string filename = AppSettingsManager.Current.ProductImagePathLarge + _prod.ActiveProductItemCollection[0].Sku + AppSettingsManager.Current.ProductImageExtension;
sb.Append(""entity.thumbnailURL=" + filename + "",");
sb.Append(""entity.inventory=" + _prod.ActiveProductItemCollection.Count + "",");
sb.Append(""entity.value=" + _prod.ActiveProductItemCollection[0].ActualPrice + "",");
sb.Append(""entity.ProductItemID=" + prodItem.Id + "",");
sb.Append(""entity.addToCartImg=~/Images/Buttons/btn_AddToCartFlat.gif");<");
//The last line has to be /script. < inserted on prev line. do not change it or bad things will happen.
sb.Append("/script>");
//add script to page
this.LiteralMBoxScript.Text = sb.ToString();
i have the dataset with one table.Table contains three column like 'Name','Location','Pin'.I would like to move the data from another table based on schema.
View 2 RepliesList<Dictionary <string,object>> I am reading about the list and collection, If possible, what are the different ways that I can utilize the list of dictionary collections..... gives me different examples or areas where I can use it.
View 3 RepliesI have a drop down list, and I added some items in it as follows
<asp:DropDownList ID="ddlInsAuther" runat="server"
DataSourceID="ObjectDataSourceInsAuthers" DataTextField="AutherName"
DataValueField="AutherID">
[code]...
I have some dropdown list boxes that I need to fill with data from a database but I also need the first option to be "Show All"... So I need to combine using a datasource and manually adding an item to the top of the list. I have tried two different ways with no luck:
1. with the appendDataboundItems = true, on aspx page, and below code in codebehind:
//lstClass.Items.Clear();
I have two datatables, I want to get all records which are in one datatable but all matching records which exist in another datatable should not be available.
In terms of set, you can say that record which are in 1st datatable but not in 2nd DataTable.
I am using list view to display the the data but i am getting an error like An item placeholder must be specified on ListView 'ListView1'. Specify an item placeholder by setting a control's ID property to "itemPlaceholder". The item placeholder control must also specify runat="server.Even i have specified the itemplaceholder id but no use still same error.
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how to connect a datatable to menu item?is is possible by Eval method or anything?
View 2 Replies