ADO.NET :: Passing DBNull As Argument To TableAdapter Expecting Int?
Aug 2, 2010I need to pass DBNull to a table adapter expecting int, the solution listed below does not work,
int NetID = DBNull.Value;
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ADO.NET :: Passing Values To TableAdapter Parameters?
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SQL Server :: What Should Be Expecting From This Query
Jul 23, 2010[Code]....
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package {
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[Code].....
ADO.NET :: Dbnull And Empty Db Field Same?
Feb 21, 2011is both same
View 1 RepliesAsp.net - Convert A DBNULL To Double?
Jul 22, 2010im getting a value from the database. it came out an error saying "Conversion from DBNULL to Double is not Valid." anyone,
[code]...
Convert A DBNULL To Double?
Jan 21, 2011im getting a value from the database. it came out an error saying "Conversion from DBNULL to Double is not Valid."
Public Function Total() As Double
Dim Total As Double
Dim strConn As String
strConn = ConfigurationManager.ConnectionStrings("***").ToString
[Code]....
Web Forms :: How Can I Check If My Record Is DBNull
Jan 15, 2010i would like to show an image if the record is not activated (SQL inaktiv(bit)=1)
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SQL Reporting :: Change DbNull Value To 1 In Report
Jan 10, 2011I have a question, that probably the solution is very simple, but I looked it up in the internet with no answer, the problem I'm having is, in a table I have a field, Qty (int, null) the thing that I want is in the report if the value is NULL shows 1 instead of a blank textbox, I know that the best solution is to change all the values in the database but I don't have permissions to do that, so what I need to do is a workaround in the report.
View 4 RepliesSQL Server :: System.dbnull.value Not Working?
Sep 6, 2010[Code]....
I have tried different ways. ... How do I test my integer column for DBNull?
I tried
If IsDBNull(Advlnk.RMTest)
Then
Response.Write(
"this is null")
and this doesn't work either.
.NET :: Way To Convert A TableAdapter
Sep 15, 2010I wanna do following action with tableAdapter:
string selectSQL = "select * from author WHERE authorID LIKE @authorID";
SqlConnection con = new SqlConnection("Data Source=.;Initial Catalog=bookbank;Integrated Security=True");
SqlCommand cmd = new SqlCommand(selectSQL, con);
cmd.Parameters.AddWithValue("@authorID", Convert.ToInt32(lblex.Text));
[code]...
C# - Getting @@IDENTITY From TableAdapter?
Sep 13, 2010I am trying to complete a seemingly simple task that has turned into a several hour adventure: Getting @@Identity from TableAdapter.Insert()
protected void submitBtn_Click(object sender, EventArgs e)
{
AssetsDataSetTableAdapters.SitesTableAdapter sta = new AssetsDataSetTableAdapters.SitesTableAdapter();
int insertedID = sta.Insert(siteTxt.Text,descTxt.Text);
AssetsDataSetTableAdapters.NotesTableAdapter nta = new AssetsDataSetTableAdapters.NotesTableAdapter();
[code...
Reference A DAL TableAdapter?
Nov 15, 2010i am trying to build a little ASP.NET 3.5 project to explore DAL concepts. While following the steps on this walkthrough:
[URL]
I am unable to figure out how to reference the TableAdapter added in the DAL section from within the App_Code directory. I tried adding the following different statements
using AccountsTableAdapter;
using <projectname>.App_Code.MyTableAdpater;
where <projectname> is the solution name. When I add this to the code behind page but I keep getting an error regarding the namespace. What is the pattern I need to use to find this code in 3.5 within the App_Code directory?
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Mar 6, 2010I have an optional DropDownList. If the user dosen't select any value the top most value is "0" unfortunatly the only way to send DBnull.Value to the database is check if the value is 0 and if it is then send dbnull. Is there a way you can do this within the dropdownlist without having to check for each and every dropdown?
View 5 RepliesDataSource Controls :: Insert Dbnull With Linq To SQL?
Apr 28, 2010I am trying to do an update and if no selection has been made in a dropdownlist (integer) or date field I would like to insert a dbnull value. But I am new to Linq to Sql and wonder if this is possible and if so how to process. I have the following code but the DBNull.Value is giving me an error.
Dim context As New SondageDataContext()
Dim repondant = (From r In context.Repondants Where r.RefRepondant = iRefRepondant Select r).Single
repondant.Prenom = strPrenom
repondant.Nom = strNom
'dates
If dtAdhesion > Date.MinValue Then
repondant.DateAdhesion = dtAdhesion
else
repondant.DateAdhesion = DBNull.Value
End If
'Integer for dropdownmenu
If iOccupation <> -1 Then
repondant.RefOccupation = iOccupation
Else
repondant.RefOccupation = DBNull.Value
End If
context.SubmitChanges()
Web Forms :: Invalid Cast From DBNull To Integer?
Jan 9, 2011This has never happened before. It is not happening even in my visual studio. It is only happening on the live site. This never happened before on the live site either. I changed the master template but the change I made had nothing to do with the issue here. 3
[Code]....
Exception Details: System.InvalidCastException: Conversion from type 'DBNull' to type 'Integer' is not valid.Source Error:
[Code]....
Line 25: <asp:DataList ID="DataList1" runat="server" DataKeyField="AParentID" DataSourceID="ObjectDataSource1" RepeatColumns="2" ShowFooter="False" ShowHeader="False" Font-Bold="False" Font-Italic="False" Font-Overline="False" Font-Strikeout="False" Font-Underline="False" HorizontalAlign="Center" CellSpacing="0" CellPadding="0" ItemStyle-Width="225" Width="500px">
Line 26: <ItemTemplate>
Line 27: <asp:Image ID="Image1" runat="server" ImageAlign="NotSet" ImageUrl='<%# GetImage(Eval("AParentID")).ToString %>' />
Line 28: <asp:HyperLink ID="HyperLink1" runat="server" Text='<%# Indent(Eval("ACategory")).ToString() %>' NavigateUrl='<%# String.Format("articles_view_subcats.aspx?catid={0}",DataBinder.Eval(Container.DataItem,"ACategoryID")) %>' ForeColor='<%# GetFont(Convert.ToInt32(Eval("AParentID")))%>' Font-Size='<%# GetFontSize(Convert.ToInt32(Eval("AParentID"))) %>'></asp:HyperLink>
Line 29:
ADO.NET :: Error: Object Cannot Be Cast From DBNull To Other Types?
Aug 2, 2010here's my code...
select SUM(PETTYAMOUNT) AS tot FROM FINPETTY WHERE PETTYAMOUNT IS NOT NULL AND CENTER = '1'
if (drReadera.HasRows)
{
double totamta = Convert.ToDouble(drReadera["TOTALSUMA"]);
Label2.Text = String.Format("{0:N2}", totamta);
}
note: some of the pettyamount is null that's why i've got an error in page.
SQL Server :: Object Cannot Be Cast From DBNull To Other Types?
Sep 14, 2010Case "System.Int32"
Return Convert.ToInt32(a) + Convert.ToInt32(b)
Object cannot be cast from DBNull to other types