DataSource Controls :: Sql Constraint To Convert Empty String To Null?
May 10, 2010Sql constraint to convert empty string to null
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Similar Messages:
DataSource Controls :: How To Convert Empty Textbox Text To Null On SqlCommand
Mar 22, 2010How would I convert an empty textbox.text to null when updating/inserting using an SqlCommand? I've got this to populate the textbox:
If IsDBNull(dr("data")) Then
TextBox1.Text = ""
Else
TextBox1.Text = dr("data")
End If
Here's the SET of the SqlCommand:
[Code]....
DataSource Controls :: How To ObjectDataSource NULL To Empty String
Nov 26, 2010I have pass following SQL Query to the through ObjectDataSource
[Code]....
And I am passing parameter through QueryString and My idea is like when empty string is pass it should show me all records but when I am passing empty string ObjectDataSource is making NULL and I am not getting desire result
Access :: How To Convert Empty String To Null Value - Insert Into A DB
Oct 22, 2010 How to Convert empty string to Null value - Insert into a DB
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DataSource Controls :: Microsoft Matrix Framework DataGrid - Update Command - Convert Empty Strings To NULL?
Sep 30, 2010we have a AutoGenerateColumns-enabled WmxDataGrid in which we are able to update table rows in a DataBase connected with a SqlDataSource.
Each time we clear a field an empty string is written to the database where we want to write DBNull values.
At the moment we generate the update string via UPDATE... SET.. and the SQL Server function NULLIF(value, '').
Works proper but when I want to add the values to e.NewValues in BeginUpdate event I'm not able to read the values from the auto generated text boxes. How do I do that? Is there an easier way to automatically convert empty strings to NULL values?
DataSource Controls :: How To Check For Both Empty And Null Fields
Jan 28, 2010How do I check if my value is empty AND Isnull? I need to check for both, using ISNULL is not enough because the data can change just so that it is empty.
how I can change my query to accommodate this?
[Code]....
Null Reference Using .toString / Convert The Object ConnString (a Connection String) Into A String?
Feb 13, 2010on VWD 2005 this code works fine, but on 2008 it says I haven't created an instance of the object. I want to convert the object connString (a connection string) into a string.
'This acceses the virtual directory web.config file for connection strings
'We have to convert the object to a connection string
Dim rootWebConfig As System.Configuration.Configuration
rootWebConfig = System.Web.Configuration.WebConfigurationManager.OpenWebConfiguration("/VirtualDirec")
Dim connString
As System.Configuration.ConnectionStringSettings
connString = rootWebConfig.ConnectionStrings.ConnectionStrings("ConnectString1")
Dim strConnString
As
String = connString.ToString().......
Insert Element With Empty String For Null Values
Jan 30, 2010For coonverting Linq to DataTable I am using the following Extension Method(Taken from Stackoverflow)
L[code]....
The Extension Method creates XML file.But for null values no element is created in XML file.Say if Commission field is null then commission element is missing in Xml generation.
I want to insert element with empty string for null values (ref type) and (0.00) for decimals and (0) for integers. where do i need to make change?
Passing Null / Empty String To Oracle Stored Procedure?
Mar 1, 2010We have an ASP.NET web service that invokes a stored procedure on our DB (Oracle 11g). The problem is that the call to the procedure blows up every time an empty string is passed as one of the parameters. We're seeing an ORA-01084 error, which indicates to me that call is failing before the procedure is actually run.
Here's the procedure, minus some logic that I believe is not relevant:
[Code]....
As an experiment, I modified the web service to pass null rather than an empty strings. When null is passed in, I see an error indicating "wrong number or types of arguments in call to 'CREATEREPORT."
I also tried passing DBNull.Value whenever the params were null/empty, but that resulted in the error
Parameter 'p_column_id': No size set for variable length data type: String.
(Of course, p_column_id was the empty parameter in this case).
So, how can I successfully pass empty strings as parameters to my stored procedure? We definitely want to allow the p_column_id parameter to be empty.
VS 2010 / Json Replace Null Values With Empty String?
Jun 1, 2012If I have JSON like this and pass it to the engine I am using to create a PDF file, the word "null" appears on the PDF. This isn't really my example, but I googled "json replace null empty string" and this was a hit, which is a good representation of my data, also:
{
"relationship": {
"type": "relationship",
"id": null,
"followed_id": null
}
}
We use a rendering engine that creates a PDF from a fixed template and variable data in the form of a json string. But our customers don't want to read that the id is "null", they want to read that the id is blank. In my C# program, the json is just a string, so I can easily do something like this:
jsonString = jsonString.Replace("null,", ",");but the issue is I can't replace null-comma with a comma, because then it's invalid json.
how to I make the rendering engine *and* my customer both happy?
Web Forms :: How To Write Dropdown Menu Value In Oder To Get Empty String Instead Of Null
Aug 26, 2010I have drop dowm menu as follow.
<asp:ListItem Value="">none</asp:ListItem>
<asp:ListItem Value="STO">Stock</asp:ListItem>
<asp:ListItem Value="ORD">Order</asp:ListItem>
If I chose none, it stores data as "Null" If I Query the data as below, I don't get the data has value of "Null" SELECT tabale From type Where type <> STO or type <> ORD I get data that has empty string but not Null.
1, How do I write dropdown menu value in oder to get empty string instead of Null?
I did <asp:ListItem Value="">none</asp:ListItem> but this stores Null.
2, Why this Query won't pick up Null?
SELECT mytabale FROM type WHERE type <> STO or type <> ORD
Forms Data Controls :: Displaying A Null Or Empty Cell For A Null Datetime Database Value In Gridview?
Dec 6, 2010I have setup my business object to have a create_date and edit_date members both datetime datatypes. My company want to display the create_date and edit_date fields in a gridview for each transaction. The problem i have is that after insterting a record it will have a valid create_date but no edit_date and when displayed in the gridview it defaults to datetime.minvalue (My default). How on earth do i show an empty field in my gridview for a null datetime field in the database?
I am using similar architecture to the Imar Spaanjaars example of a tiered solution. With a few small tweeks it has worked well for me for ages. I am passing a List<Database> to my object datasource which connects to my gridview.
DataSource Controls :: Convert Sql Datetime To String
Feb 16, 2010Datecol is a datetime in a sql table.
q="select convert(char(8),datecol1,112) from tblone where datecol2 is null"
is what I use for my query string for sqlcommand(). I'm getting the error "a field or property datecol1 could not be found in the datasource". Without the convert, the query is ok.
DataSource Controls :: Convert Records Into One String?
Jun 10, 2010Convert records into one string
View 3 RepliesDataSource Controls :: Convert String To Datetime?
May 19, 2010.aspx
[Code]....
And then when I save....cs
[Code]....
And Stored Procedure is like this
[Code]....
the problem is when I use debugging mode, I mean using with visual studio, it's going fine. But when I call from IIS there has a error.. Unterminated string constant. I know where is the problem
[Code]....
DataSource Controls :: Convert String To SQL Data Type?
Feb 22, 2010how would one go about converting a string to an SQL time data type? Lets say i wanted to convert @param1 to SQL time and @param2 to SQL date.
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DataSource Controls :: How To Convert String (comma Separated) To Int
Mar 1, 2010I'm having a asp.net listbox on the front end webform with multiple selection, after user selecting multiple items, i'm capturing the DataKeyValue of listbox(which is amenity_id of bigint) and looping all the selected items to a string with comma sepearated values. For example if user selects first 4 options, my output string will be like this (1,2,3,4) and i'm passing this as a string type to my data access layer and then to my below stored proc. I'm geting this error while inserting.. i know that my data type is of bigint and i'm trying to insert string type. i need to convert the string type to INT type and insert data. below are my stored procs:
[Code]....
This is where i'm splitting the comma seperated values and inserting them into table.
DataSource Controls :: How To Implicitly Convert Datatable To String
Jul 30, 2010I'm having a problem with reading a string from sqlserver database and use it as the text of a label,
getDescTableAdapter gd = new
getDescTableAdapter();
Label2.Text = Convert.ToString(gd.GetDesc(pid));
what i get in the form is: getDesc ! everything is right in the dataset and if i bind it to a gridview it works fine but when i convert it to string it seems it converts the table adaptor's name instead of the value.ance
DataSource Controls :: Failed To Convert Parameter Value From String To Int32?
Jan 10, 2011I swear I'm overthinking this as I've tried different combinations to do an insert from Code Behind to my Sql DB.
This is what my table looks like:
[Code]....
My code behind:
[Code]....
I suspect that the problem may be my date. The format that goes from the UI is mm/dd/yyyy.
DataSource Controls :: Failed To Convert Parameter Value From A String To A Guid?
Jun 3, 2010I am trying to get the 'userid' of the logged in user using the code below:
"MembershipUser myObject = Membership.GetUser();
String userId = myObject.ProviderUserKey.ToString();"
and later using it as a parameter to the stored procedure.
The logic here is, the user should login first in order to retrieve his/her album. when the user is logged in, im retrieving the 'userid' and using it as parameter to load the corresponding album from the database.
when i login and open the albumpage, im end up with this exception:
"Failed to convert parameter value from a String to a Guid".
What could be the reason and how can i avoid this exception.
by the way im using the aspnet_Users table's userid field.
Forms Data Controls :: Getting Text As Empty String When Gridview Cell Is Empty?
Feb 19, 2010I have a gridview with two bound fields. On clicking a button i want to display the values in first row of gridview in two textboxes. But if gridview cell is empty i am getting the text in textbox to which the value of cell is given as -' 'i know my problem will be solved if i use the template fields instead. But i want a solution while maintaining the bound fields ,if any.
View 2 RepliesDataSource Controls :: Using Null Date Values And String Was Not Recognized As A Valid DateTime Error?
Jul 5, 2010I am very new to ASP .NET and am getting above error when trying to insert a new record into a SQL database. I have turned on Option Explicit On so the default date of 01/01/1900 does not get assigned to this field automatically. Since most of the people in the database will not have a date of death, I need to have "blank" deathDate. When I run the stored procedure within SQL and choose pass null value, the Insert Procedure works fine. When I attach to Web Form, however, I get String was not recognized as a valid DateTime error. How can I set it so Null values are accepted into this date field.
View 1 RepliesDataSource Controls :: Error - Cannot Implicitly Convert Type 'string' To 'System.Web.UI.WebControls.TextBox
Feb 19, 2010I added a button click event to my project as:
But since this i am getting this error saying:
Cannot implicitly convert type 'string' to 'System.Web.UI.WebControls.TextBox
There seems to be no error in my code.
DataSource Controls :: Error - Cannot Implicitly Convert Type 'string' To 'System.Data.DbType
Apr 27, 2010I am getting error "Cannot implicitly convert type 'string' to 'System.Data.DbType".
When I am passing Stored procedure parameter it expets 'System.Data.DbType" and the Data member is declared as a string.
C# - Set An Empty String As A Default Value For A DataSource Parameter?
Sep 30, 2010This doesn't work. I've got an exception from SQL databse that column does not allow nulls.
<asp:SqlDataSource ID="MyDataSOurcet" runat="server"
ConnectionString="<%$ ConnectionStrings:MyConnectionString %>"
InsertCommand="INSERT INTO MyTable(Name) VALUES (@Name) WHERE NameID = 1"
<InsertParameters>
<asp:Parameter Name="Name" Type="String" DefaultValue=""/>
</InsertParameters>
</asp:SqlDataSource>