Use A Variable In A SqlDataSource SelectCommand?
May 17, 2011So making a .Net site w/ VB + running off a MySQL server.
Trying to use a variable within the connectionstring to only retrieve certain data.[code]...
So making a .Net site w/ VB + running off a MySQL server.
Trying to use a variable within the connectionstring to only retrieve certain data.[code]...
I am trying to pass a variable to a SelectCommand in SqlDataSource. I have this MyIdVal that need to be passed.
Here is the code :
<form id="form1" runat="server">
<div>
<%=MyIdVal%>
</div>
[Code]....
I have a vb.net application that I want to dynamically create a search criteria using a SQLDataSource. I was trying to dynamically generate a select statement with parameters, assign that string to the selectCommand for the SQLDataSource then selectively assign the parameters.
The issue is several fields (user id) (user name) (email addr)... that I wanted to allow the user to enter any number of these and construct the select given what they entered.
That works if I just construct the string. But I want to use parameters for some sql injection protection as that page will be viewable on the internet.
What happens is I assign the select command but the SqlDataSource does not pick up that there are now some parameters that were not there before.
as in.
Dim firstName As String = tbFirstName.Text
Dim userName As String = tbUserName.Text
Dim userIdFlag As Boolean = False
[Code].....
I have set a global variable in a module, which I then set the value in form1.I then wish to use this in form 2 in a Select Command for a dataadapter, it however says the variable is not declared although if I call it in a MsgBox on loading form2 it tells me the variable.
My code for the select is:
Me.OleDbSelectCommand1.CommandText = "SELECT Amount, [Record Number] FROM [" & _
"Test] WHERE ([Record Number] = ?)"
[code].....
I'm trying to retrieve values using vb.net from a sql database. How do I use "SqlDataSource.Select()"? Is there a way to move the value to a variable that I can use for other things? I know its kind of scattered and vague but that is the best I can do. I basically need to set a labels text to a value in a table.
View 2 RepliesHow can I change my selecommand, and keep it through the remainder of the page (when using pagination, sorting)?I have a page of checkboxes:
<input type="checkbox" name="checkbox_1" />
<input type="checkbox" name="checkbox_2" />
<input type="checkbox" name="checkbox_3" />
<asp:Button runat="server" Id="CustomButton" text="Create Report" PostBackUrl="report.aspx?"/>
Then on report.aspx I want to generate a standard listview based on the selections in the checkbox.
<asp:ListView runat="server" ID="ReportListView" DataSourceID="ReportListViewSDS">
<LayoutTemplate runat="server">
...<asp:PlaceHolder runat="server" ID="itemPlaceHolder" />...
[code]....
Will the changes i make to the sql command in the PreRender function hold when I have applied pagination or sorting to the listview?
When the page loads, the GridView (located in an update panel) should be loaded with my first SQL SELECT statement. On the button click, the same GridView will be loaded with new data. On startup, the GridView doesn't appear.
[Code]...
How to retrieve Dataset if there is sqldatasource control in the aspx page?
View 2 RepliesI am using a Microsoft Access Database and I cannot get the Update to work. I assigned a Primary Key in the Access table, but I still receive the error: "Dynamic SQL generation for the UpdateCommand is not supported against a SelectCommand that does not return any key column information"
Here is the
Try
strSQL = "SELECT * FROM Item ORDER By Item.Job"
With oCmd
[Code].....
dynamic sql generation for the updatecommand is not supported against a selectcommand
View 9 RepliesI have the following code for a web page that I'm working on:
Imports System.Data.SqlClient
Imports System.Data
Partial Class _Default
Inherits System.Web.UI.Page
[code]....
when the buttonclick event fires I receive the following error:
Error:System.InvalidOperationException: Fill: SelectCommand.Connection property has not been initialized. at System.Data.Common.DbDataAdapter.GetConnection3(DbDataAdapter adapter, IDbCommand command, String method) at
[code]....
I am using MsAccess DB and Vb.NET 2008. This is a code to check the Database for duplicate entries but m geting an Error." Fill: SelectCommand.Connection property has not been initialized."
[Code]...
1) My login screen is talks to a database and is supposed to verify the users credentials - instead i get this error and i dont know what to do next pleae help.. This error occurs on the line that says adaptor.fill(dataset, "0") ------Fill:selectcommand.connection property has not been initialized
Private
Sub
OK_Click(ByVal
sender As
[code]....
I am doing a project for a course that involves a database, i have it set up already so that i can have two different labels displaying data from two different fields in a table when the form loads, but i am trying to get it so that when i click an option in a listbox it will change the displayed information. I am using the following code to set it when the form loads:[code]
View 2 RepliesI have some Tables in an Access DataBase with the same structure and different names. I wish to use one only form (Page) to view data. I must change the name of the Table contained in the SelectCommand but Im not able to do so.
<asp:AccessDataSource ID="AccessQuadent" runat="server" DataFile="~/App_Data/QuaAdmin.mdb">
SelectCommand="SELECT * FROM [QuaGen] ORDER BY [FileDate]desc">
[code].....
I am retrieving the scope_identity of a db entry, and I want to use that variable in a different SqlDataSource, primarily as an but I am unable to access the variable.I have the variable being displayed in a msgbox, and it is displaying properly, I am just unsure how to access it in the SqlDataSource. Here is my code;This is the datasource that inserts the first information and received the scope_identity, as well as the _inserted event;
Code:
<asp:SqlDataSource ID="InsertPatientInfo" runat="server" ConnectionString="<%$ ConnectionStrings:DataConnectionString %>"
providername="<%$ ConnectionStrings:DataConnectionString.ProviderName %>"[code]....
After the SQLDataSource gets the values from the database, I want to be able to use these values in the code behind. Kindly spare 5 minutes and give me some suggestions.
[Code]...
I have a SqlDataSource that is supplying data to my GridView. Thats all i am using on my form, thus i have NO code behind at all. But somewhere i need a TRY CATCH block just in case my connection get's lost. What code must i place where?
If i get a error i want my lblMessage Text to be "No connection".
Edit
My GridView in my Machine.aspx
<asp:GridView ID="GridView1" runat="server" AllowPaging="True" AutoGenerateColumns="False"
Height="209px" PageSize="7" Width="331px" AllowSorting="True"
[Code].....
I want to call a Stored Procedure using SqlDataSource. I've been reading the library documentation of the classes but i'm getting slightly confused. To call a stored procedure, I understand that I have to change the selectcommandtype and then set the selectcommand property to the name of the procedure.
'Change command type to stored procedure
SqlDataSource1.SelectCommandType = SqlDataSourceCommandType.StoredProcedure
'set name of stored procedure
[code].....
i need to update my data using stored procedure here is my code :Try
con = getconnect()
con.Open()
sqlcmd = con.CreateCommand
[code]......
As part of the application I'm writing in Visual Basic, I have written code to display records in text boxes and cycle through each of them one record at a time. I'm having trouble getting the code I've written to update records to work however.
VB
Public Class frmRecords
' VARIABLES TO AID NAVIGATION THROUGH RECORDS
Dim moverow As Integer
[code]....
At the present time I get an error that says "The DataAdapter.SelectCommand property needs to be initialized"
I am trying to get a parameter for my update from the gridview but it is an ID column that I do not want displayed. If I display the data in a boundfield it works fine but if I set the visibility to false the parameter is no longer sent to the update stored procedure. There does not appear to be a hiddenfield column that I can put into the gridview.I have tried to set the parameters through the code behind but I am not certain on how to access the data I want the following code does not work (It sets the parameter to nothing
Protected Sub grvFacilityDisciplineBillingRate_RowUpdating(ByVal sender As Object, ByVal e As GridViewUpdateEventArgs) Handles grvFacilityDisciplineBillingRate.RowUpdating
Dim row As GridViewRow = grvFacilityDisciplineBillingRate.Rows(e.RowIndex)
[code]....
I have an SqlDataSource object, linked to a GridView, which receives data from a database when executed.I'd like to add the values of the "Cost" column, to get the "TotalCost", and place it in a TextBox or Label on top of the GridView.Is it possible to just use (recycle) the data in the SqlDataSource object, instead of using another SqlDataSource object to just get the TotalCost"?
View 1 RepliesI have a asp.net page that has several SqlDataSources defined that feed data into some graphs. The problem is that the graph product does not handle "no data" very well, and throws an error. I'd like this to handle the situation more gracefully-- so I need to check whether the SqlDataSource returned data or now before rendering the graph (and if not, just post a message saying "No Data" or something).
Is there an easy way to check if the data source returned data, and do this if/then without a bunch of code behind?
Protected Sub Button1_Click(ByVal sender As Object, ByVal e As EventArgs) Handles Button1.Click[code]...
it checks the username and password in the database and redirecrs to respective page on the basis of rows returned. i'm having problem in finding a right function in the sqldatareader namespace so that it counts the number of rows affected.
I'm using ASP.NET/VB.NET to create this with SQL 2005. I have a project where I'd like to take a set of records from a table, then send each one through an API, get a result and writeback the result to a table, then move to the next.
Initially, my thought was create a SQLDataSource that grabs all the records, then perform the action on a button to do the action of sending through each record.
Is there a way I can call the recordset from SQLDataSource and perform a loop? I'm thinking something like in Classic ASP/VBScript where you would open a RecordSet, do an action, then Loop until the RS was EoF.
I have a multiselect enabled listbox on the page that is populated from a SqlDataSource. I have another DataSource that retrieves the selected items from the database.I cannot for the life of me figure out how to set all of the selected items in the listbox. I have figured out how to get the first item from the selected items sqldatasource, but I don't know how to set ALL of the items from the sqldatasource as selected. [code]
View 4 RepliesI'm currently trying to loop through an array (two values) and use both values in a query inside the loop Right now my code doesn't work. I'm trying to populate dynamically the "appType" parameter within the "SelectParameters" tags of the SQLDataSource, but this won't work.
[Code]...
I am trying to programatically use my SQLdatasource in my code behind so that I can select a certain field from a table based on the selectedindexchange event of a listbox control on my form. I have one datasource already set to the listbox control but i want a seperate datasource to select a field based on the value of the listbox. I declared a new datasource sqlDataSource2, set the connectionstring to the same database/table and i have the following line set for the select statement
View 1 RepliesIm just getting user to passing in varibles to SQL i have the below connection string and its throwing an error saying "The SelectCommand Property has not been initialized before calling 'Fill'
[Code]...