how to pass null value to database from cmd.Parameters.AddWithValue in asp.net

I want to save NULL in database for column while textbox is empty. Here is my code,

cmd.Parameters.AddWithValue("@RedirectUris", ((RedirectUris.Text == "") ? DBNull.Value.ToString() : RedirectUris.Text));

where RedirectUris is textbox id. In this scenario database is saving empty value not as NULL. Please help me to do this.

cmd.Parameters.Add(new SqlParameter("@RedirectUris", string.IsNullOrEmpty(RedirectUris.Text) ? (object)DBNull.Value : RedirectUris.Text));

Creating null value SqlParameter parameter objects with , On problems that arise tying to add a null valued SqlParameter using the NET null value and the SqlClient DBNull value are worlds apart. Instead of AddWithValue adding a parameter with the value of DBNull.Value when it Value values when we want to pass null s: I specialise in C# and ASP.NET� Passing NULL Values Back to your DataBase. You also have to handle NULLS going the other way: back from your ASP.NET code to your database. For starters you’ll need to know how to set parameters going to the database to the NULL values that the database understands.

You can do this:

cmd.Parameters.AddWithValue("@RedirectUris", 
        string.IsNullOrEmpty(RedirectUris.Text) 
        ? (object)DBNull.Value : 
        RedirectUris.Text);

Might make sense to check if the value of the textbox is null or empty

SqlParameterCollection.AddWithValue(String, Object) Method , Use Value instead of null, to indicate a null value. Returns. SqlParameter. A SqlParameter object. Examples. The following example demonstrates how to use the� Now we insist that our method is called instead of the dodgy Microsoft one, by supplying the third parameter, like this, and it adds all required parameters, with DBNull.Value values when we want to pass nulls: cmd.Parameters.AddWithValue(" @Category", line.Category); cmd.Parameters.AddWithValue(" @DailyActual", line.DailyActual, null); cmd

You can use the short format:

// update
cmd.Parameters.AddWithValue("@ResponseTimeDays", responseTimeDays ?? Convert.DBNull);

// insert
new SqlParameter("@ResponseTimeDays", cinfo.ResponseTimeDays ?? Convert.DBNull)

SqlCommand Parameterized Inserts and Null Values, AddWithValue("@Field1", Record. When I pass an instance of my class into this function, and some of the not taking advantage of database efficiency and utilizing null values. When you send a null parameter value to the server, the user must specify DBNull, not null. SqlParameter param = cmd. Cmd.Parameters.AddWithValue("@StartDate", Convert.ToDateTime(txtFromDate.Text)); ie adding the parameter directtly with a name and a "native" value. And you are using a SqlDataAdapter rather than calling directly your SP ?

Pass NULL instead of default in SQL parameter , I want to pass NULL instead of default. or you could try passing in null as well : AddWithValue() method which would allow you to not have to specify the exact type that Value), new SqlParameter("@Order", lstcovarage. I have following code for specifying parameters for SQL query. I am getting following exception when I use Code 1; but works fine when I use Code 2. In Code 2 we have a check for null and hence a if..

Passing NULL Values to a SQL Stored Procedure from .NET Core , I've previously posted about how to cope with nullable values retrieved from a SqlDataReader but it's also necessary to account for nulls when� I have a stored procedure which updates a database using the parameters I supply but I'm having trouble passing a NULL to the stored procedure The field I need to make NULL is a DateTime field DB.Parameters.AddWithValue("@date", NULL)

How To Use Output Parameter In Stored Procedure In C#, First, we create a table in the database, and also create a stored procedure [ fldCellPhone] [nvarchar](30) NULL,; [fldEMail] [nvarchar](60) NULL,; [fldPK] [int] Now create a stored procedure with three output parameters. conn = new SqlConnection();; SqlCommand cmd = new SqlCommand();; conn. Use AddWithValue whenever you want to add a parameter by specifying its name and value. For SqlDbTypeXml enumeration values, you can use a string, an XML value, an XmlReader derived type instance, or a SqlXml object. Applies to See also. Commands and Parameters (ADO.NET) DataAdapter Parameters (ADO.NET) Using the .NET Framework Data Provider

Comments
  • It is better because here we do'nt need to create new SqlParameter.