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ASP .NET Display Random records from the database
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Join Date: Feb 2005
Posts: 86
Reputation:
Solved Threads: 3
Here is the code I use in the World recipe random record. I've been looking all over the net on how to display random record using access db on ASP .NET, but found most for SQL server like NEWID(), doesn't work on Access. This could be easily done in ASP 3.0. So I do some research on it, and came with this code.
Note: This does not use code behind, it's inline. Written entirely in notepad. I have VS .NET but decide not to use it.
LIVE DEMO: http://www.myasp-net.com
On the page_load call the random subs
'Call Random Recipe
RandomRecipeNumber()
RandomRecipe()
LIVE DEMO: http://www.myasp-net.com
Have fun!
Note: This does not use code behind, it's inline. Written entirely in notepad. I have VS .NET but decide not to use it.
LIVE DEMO: http://www.myasp-net.com
ASP.NET Syntax (Toggle Plain Text)
<%@ Page Language="VB" Debug="true" %> <%@ import Namespace="System.Data" %> <%@ import Namespace="System.Data.Oledb" %> <script runat="server"> 'Pulls a Random number for selecting a random recipe Sub RandomRecipeNumber() 'It connects to database strSQL = "SELECT ID FROM Recipes" Dim objDataReader as OledbDataReader 'Call Open database - connect to the database DBconnect() objConnection.Open() objDataReader = objCommand.ExecuteReader() 'Counts how many records are in the database Dim iRecordNumber = 0 do while objDataReader.Read()=True iRecordNumber += 1 loop objDataReader.Close() objConnection.Close() 'Here's where random number is generated Randomize() do iRandomRecipe = (Int(RND() * iRecordNumber)) loop until iRandomRecipe <> 0 End Sub 'Pulls aand dsiplay random recipe records Sub RandomRecipe() strSQL = "SELECT ID,CAT_ID,Category,Name,Author,Date,HITS,RATING,NO_RATES, (RATING/NO_RATES) AS Rates FROM Recipes" Dim objDataReader as OledbDataReader 'Call Open database - connect to the database DBconnect() objConnection.Open() objDataReader = objCommand.ExecuteReader() Dim i = 0 'Go until a random position do while i<>iRandomRecipe objDataReader.Read() i += 1 loop Dim strRanRating as Double 'Display recipe lblRating2.Text = "Rating:" lblRancategory.text = "Category:" lblranhitsdis.text = "Hits:" lblranhits.text = objDataReader("Hits") strRanRating = FormatNumber(objDataReader("Rates"), 1, -2, -2, -2) lblranrating.Text = "(" & strRanRating & ")" strRatingimg = FormatNumber(objDataReader("Rates"), 1, -2, -2, -2) LinkRanName.NavigateUrl = "recipedetail.aspx?id=" & objDataReader("ID") LinkRanName.Text = objDataReader("Name") LinkRanName.ToolTip = "View" & " - " & objDataReader("Name") & " - " & "recipe" LinkRanCat.NavigateUrl = "category.aspx?catid=" & objDataReader("CAT_ID") LinkRanCat.Text = objDataReader("Category") LinkRanCat.ToolTip = "Go to" & " - " & objDataReader("Category") & " - " & "&category" objDataReader.Close() objConnection.Close() End Sub 'Database connection string - Open database Sub DBconnect() objConnection = New OledbConnection(strConnection) objCommand = New OledbCommand(strSQL, objConnection) End Sub 'Declare public so it will accessible in all subs Public strDBLocation = DB_Path() Public strConnection as string = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & strDBLocation Public objConnection Public objCommand Public strSQL as string Public strRatingimg as Integer Public iRandomRecipe as integer 'Get the database server Map Path - This is where you change the database name and path Function DB_Path() if instr(Context.Request.ServerVariables("PATH_TRANSLATED"),"Recipes") then DB_Path = System.Web.HttpContext.Current.Server.MapPath("MyRecipes.mdb") else DB_Path = System.Web.HttpContext.Current.Server.MapPath("/mydb/MyRecipes.mdb") end if End Function </script>
'Call Random Recipe
RandomRecipeNumber()
RandomRecipe()
LIVE DEMO: http://www.myasp-net.com
Have fun!
Last edited by Paladine; Sep 1st, 2005 at 2:21 pm. Reason: ** Added Code Blocks
Dexter Zaf
Ex-designz.net
Ex-designz.net
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