i m getting error of casting please tell me why

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C#

com = new SqlCommand("SELECT MAX(createddate) FROM Payout_Master WHERE sponcorid='" + code + "'", con);
DateTime date = (DateTime)com.ExecuteScalar();//HERE M GETTING ERROR OF CASTING

if(date!=DateTime.Now.Date)
{

}

[edit]code block added[/edit]

Posted 22-Nov-12 4:49am

sumit kausalye

Updated 22-Nov-12 10:59am

Nelek

v3

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Comments

Ravi Bhavnani 22-Nov-12 11:09am

Inspect the type of object returned from your call to ExecuteScalar(). That will lead you to the solution.

3 solutions

Solution 2

Try this.

C#

using( SqlConnection cn =new SqlConnection(ConfigurationManager.ConnectionStrings["Conection Name  here"].ConnectionString))
{
SqlCommand com=new SqlCommand();
com = new SqlCommand("SELECT MAX(createddate) FROM Payout_Master WHERE sponcorid='" + code + "'", con);
con.Open();
var OrderDate = (String)com.ExecuteScalar();
if(!string.IsNullOrEmpty(OrderDate))
{
  DateTime oDate = Convert.ToDateTime(OrderDate);
  // rest of the code.
}

}

Posted 22-Nov-12 5:23am

pramod.hegde

Solution 3

If there is no created date at all for the given code, the result will be DBNull (and cannot be cast to a DateTime). Check the result type and convert accordingly.

Some other remarks:
- WHERE sponcorid='" + code + "' -> You know "Bobby Tables"? Search google, its the first hit.
- you compare sponcorid to code... but an id isn't a code, and vice versa.

Good luck!

Posted 22-Nov-12 5:23am

E.F. Nijboer

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stefbauer · Accepted Answer · 2012-11-22T05:17:00

Solution 1

Hi,

you cannot cast object (the return type of ExecuteScalar()) to DateTime directly.

Maybe you can try something like the following:

C#

string str = Convert.ToString(com.ExecuteScalar());
DateTime date = DateTime.Parse(str);

Posted 22-Nov-12 5:17am

stefbauer