Question

I read values from an local Access mdb-file. One value is stored as string in the db and I have it in a table. When using the GetType() method it return “System.String” and I can print it on the console without a problem but when I want to use it as an attribute for another method (requires a string) I get an error (“Cannot convert from ‘object’ to ‘string'” and the same for ‘int’). The same problems occur with some int values.

Am I doing something wrong or what is the problem in that case?

Console.WriteLine(dt.Rows[0][ProjName]); //prints project_name
Console.WriteLine(dt.Rows[0][ProjName].GetType()); //print "System.String"

Project = new Project(dt.Rows[0][ProjName], dt.Rows[0][MinDay], dt.Rows[0][MinWeek], dt.Rows[0][DayWeek]); //Error
Project = new Project(Convert.ToString(dt.Rows[0][ProjName]), Convert.ToInt32(dt.Rows[0][MinDay]), Convert.ToInt32(dt.Rows[0][MinWeek]), Convert.ToInt32(dt.Rows[0][DayWeek])); //Works Fine

Constructor for the Project Class:

public Project(string projectName, int hoursPerDay, int hoursPerWeek, int daysPerWeek)

Answer 1

You have stated in your answer is works when converting, and it is necessary as they are not strings and integers. They are objects. You can create a methid to handle it if you want.

public Project CreateProject(object projectName, object hoursPerDay, object hoursPerWeek, object daysPerWeek)
{
    return new Project(projectName.ToString(), Convert.ToInt32(hoursPerDay), Convert.ToInt32(hoursPerWeek), Convert.ToInt32(daysPerWeek);
}