DataSource Controls :: Code Behind Fail SQL String?
Mar 16, 2010
ive an access database with a table, in this table there is only one data column and one counter column (id, pet) i want to draw random a record. Reading on the web i came with this SQL solution: "SELECT TOP 1 tab_pets.pet FROM tab_pets ORDER BY Rnd(id)" and it works perfectly.
The problem is while using this statement in my code behind (in a class) as it draw always the same record, hence generates the same random each time. I though that the access Rnd() function would be handled by the access driver and not by my application, how can i resolve this?
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Similar Messages:
Jul 7, 2010
I'm concatenating a string in codebehind to use in a sql select statement.
in aspx
<asp:Label ID="LabelHidden" runat="server" Visible="False"></asp:Label>
SelectCommand="SELECT * FROM [Data] WHERE [ActivityName] IN (@ActivityName) AND ([ID] = @ID)"
<SelectParameters>
<asp:ControlParameter ControlID="DropDownList_Employees" Name="ID"
PropertyName="SelectedValue" Type="Int32" />
<asp:ControlParameter ControlID="LabelHidden" Name="ActivityName"
Type="String" />
</SelectParameters>
in codebehind
foreach (ListItem li in ListBox_Activities.Items)
{
if (li.Selected)
{
queryBuilder += li + "', ";
}
queryBuilder = queryBuilder.Substring(0, queryBuilder.Length - 1);
LabelHidden.Text = queryBuilder;
When i run the code it comes up blank. I did a query trace and it seems to be running as
exec sp_executesql N'SELECT * FROM [Data] WHERE [ActivityName] IN (@ActivityName) AND ([ID] = @ID)',N'@EmployeeID int,@ActivityName nvarchar(50)',@EmployeeID=4,@ActivityName=N'Production Technical Support'', Tools Development'','
with exta "'s
How can i format the queryBuilder string correctly in my code?
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Jan 23, 2010
I want to login my SQL Server by using SQL Server Authenticate but this i fail to do thatI have already configurate "sa" account and change to "windows and sql server authenticate" still not workingCan someone tell me or show me the tutorial how to properly configurate to using "sa" to login by "SQL Server Authenticate"?
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Mar 2, 2010
I open a sqlconnection and sqlcommand. I execute a stored procedure and get the scope_identity from that procedure to be used within another procedure that needs to be fired. Unfortuntley if the second procedure fails forwhatever reason the data change for the first procedure commits anyway. I kind of want to do a began transaction end transaction on the c#.net side. Also I need to execute a stored procedure multiple times....
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Mar 11, 2010
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Jan 20, 2011
"System.FormatException was unhandled by user code - Input string was not in a correct format"
This is driving me crazy! Can anyone see what the problem is?
[Code]....
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Feb 2, 2010
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Feb 25, 2010
Im trying to take the example from this website http://blogs.lessthandot.com/index.php/DataMgmt/DataDesign/sql-server-2008-proximity-search-with-th and make it work on my site. Its this part im having troubles with
[Code]...
here is my code from my function that doesnt work.
[Code]...
Any suggestions on how to get it to work? it fails at rdr = cmd.ExecuteReader(); im also worried it will also fail at ZipCodes.Add(rdr["h.*"].ToString());
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Aug 3, 2010
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Mar 3, 2011
I have a gridview 'gvTemplates' that loads from the Page_Load method. It is using a stored procedure and this works fine. Then I do a search function on that gridview and that works fine. So when I click the search cancel button, which calls the same exact code that loads the gridview from Page_Load, I get the dreaded 'Input string was not in the correct format'.How can the exact same code and stored proc work fine the first time but fail the second?Gridview:
[Code]....
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Apr 3, 2010
Not sure if this is the correct section to ask this but this is regarding storing datatype problem.im trying to convert an image file retrieve from a folder and convert it to Byte so that i can save into database
In below function i retrieve and convert the image from a folder to byte
[Code]....
Then i set ImageUrl in PageLoad
[Code]....
My image datatype in database is image
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May 20, 2010
I have several web forms which use a GridView linked to a DataSource control which is defined at design time as follows:
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id="dsStates"
runat="server"
connectionstring="<%$ ConnectionStrings:PgSqlConnection %>"
oldvaluesparameterformatstring="Original_{0}"
providername="<%$ ConnectionStrings:PgSqlConnection.ProviderName %>" >
</cc1:pgsqldatasource>
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Apr 16, 2010
Can the select command of a SqlDataSource be given by code in the code behind file. Also by calling the SqlDataSource.Select can the select statement be executed?
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Dec 3, 2010
I want to bind an ObjectDataSource to a property in my asp page and I want to do it in the page's aspx code, not in code-behind. I've already done it in code-behind, as follows:
[Code]....
I'd prefer to get rid of the ugly code-behind and just do this in mark-up. Something like
[Code]....
This gives me a run-time error: Cannot create an object of type 'System.Object' from its string representation 'SelectedBook' for the 'DataSource' property.Is there a way of doing this declaratively and not in code-behind? Further, what if what I want is to actually use a child property of the property in question? For example, if my Book object has a ReaderComments collection, can I databind to it decaratively in the aspx mark-up?
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Mar 25, 2010
I need to pass the control parameter to Sql Datasource in code behind,
<asp:ControlParameter ControlID="DDL_RType" Name="rtype" PropertyName="SelectedValue"
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Sep 30, 2010
My masterpage has a loginStatus control to let users log out and it works very well on normal pages .Recently, I created a new content page associated with the mentioned master page. Such new page allows users to add textboxes dynamically through ajax asycpostback.
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I follow this video to make such "Dynamically add control" page.
http://www.asp.net/ajax/videos/how-to-dynamically-add-controls-to-a-web-page
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Feb 14, 2011
I want to create a link button with following code. However, this linkbutton doesnt work correctly: when I clicked it, it cannot go to the target url and will cause an exception.
<asp:LinkButton PostBackUrl='LearnPage.aspx?cid=<%#Eval("cid") %>' runat="server"><%# Eval("cname")%></asp:LinkButton>
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Mar 6, 2010
Trying to add another 2nd dropdownlist to Query String... Below This Query String works Perfectly:
Query = String.Format("SELECT {0} FROM {1} WHERE NACategory = '{2}' ORDER BY {3}", PrimaryKeyColumn, TableName, DDLCategory.SelectedItem.Text, SetSorting())
I've tried to add a 2nd DDLSubCategory.SelectedItem.Text - But its throwing and error message.
Exception of type System.StackOverflowException was thrown.
Query = String.Format("SELECT {0} FROM {1} WHERE NACategory = '{2}' AND NASubCategory = '{3}' ORDER BY {4}", PrimaryKeyColumn, TableName, DDLCategory.SelectedItem.Text,
DDLSubCategory.SelectedItem.Text, SetSorting())
Can Someone take a look I'm not sure how to write (add) 2nd DropdownList (DDLSubCategory.SelectedItem.Text)
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Sep 13, 2010
I am thinking of putting a drop down list to choose a couple of options. Depending on what is selected I want to then specify a specific connection string. I use the ConnectionString="<%$ ConnectionStrings:SomeConnectionString %>" format. How can I handle this in the .aspx page?
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Sep 12, 2010
I need to set the SQLDataSource connection string on the fly. Right now, this is what I have:
<asp:SqlDataSource ID="SqlDataSource1" runat="server"
OnSelecting="SqlDataSource1_Selecting"
SelectCommand= (working select stmt here)</asp:SqlDataSource>
Then, I have this:
[code]....
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Apr 25, 2010
I have tried to break the below string like
DECLARE
@strFilterCond Varchar(Max)
set @strFilterCond=''
SET @strFilterCond=' ISNULL(Cast(EmpID as Varchar(1500)),''Undefined'') = ''000012946'' AND ISNULL(Cast(EmpName
as Varchar(1500)),''Undefined'') = ''Abosch, Karen'' AND ISNULL(Cast(tblEmployees.JobLookupID as Varchar(1500)),''Undefined'') = ''Undefined'' '
The Result String are like:
ISNULL(Cast(EmpID as Varchar(1500)),''Undefined'')
= ''000012946''
ISNULL(Cast(EmpName as Varchar(1500)),''Undefined'')
= ''Abosch, Karen''
ISNULL(Cast(tblEmployees.JobLookupID as Varchar(1500)),''Undefined'')
= ''Undefined''
I am unable to Break the string. break this string in sp. I do not know how to loop through the string.
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Jun 16, 2010
I am using CLR project in my website.I have used bulk insert in there.I am not able to use context connection in the procedure.Is there any way to get the connection string from web.configor from context connection.
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May 15, 2010
i work with sql database i want to connect to sql server i dont have sql manegment who could i c the connection string the palce of the sql that wen i write these comand sqlconnection con = new sqlconnection("the connection string")
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Feb 10, 2010
I am trying to insert some string values into database.
The problem here is that, the string is truncated without warning..
Here is my vb.net code
[Code]....
And here is how I declared the varible in stored procedure
[Code]....
And If I insert "myCode01234567890" then it's truncated without warning at all.
How can I let it throw an exception rather then truncate the string without any warnings ?
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Jan 19, 2010
I have a table with userID's stored in it and I want to SELECT a user out of that table to see if it's the current logged in user. I'm using this as logic to determine what action a button click will do. For example the button click will do something like this:
[Code]....
My broblem is getting the UserName from my table of data. I've tried it like this:[Code]....
But when I try debugging it shows that CurrentUser's value = Nothing
My UserNames (ToUser) contain letters and numbers (nvarchar(30)).
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