Creating new Classes Error

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Hi All,

Im trying to create a class, but i keep on getting this error.

Error 1 'GatePass.clsDSLApp.clsDSLApp()' must declare a body because it is not marked abstract, extern, or partial

here is the code below, please assist.

Error 1 'GatePass.clsDSLApp.clsDSLApp()' must declare a body because it is not marked abstract, extern, or partial C:\Users\Monde\Documents\Visual Studio 2008\Projects\GatePass\GatePass\clsDSLApp.cs 9 16 GatePass

C#

namespace GatePass
{
    public class clsDSLApp : clsDSLBase
    {
        public clsDSLApp();

        public bool FillComboBoxDataSet(ref ComboBox cboComboBox, DataSet dsRecords, int intDisplayMemberColumnIndex, int intValueMemberColumnIndex);
        public bool FillComboBoxSQL(ref ComboBox cboComboBox, string strSQL, int intConnectionIndex, int intDisplayMemberColumnIndex, int intValueMemberColumnIndex);
        public bool FillComboBoxSQL(ref ComboBox cboComboBox, string strSQL, string strConnectionString, int intDisplayMemberColumnIndex, int intValueMemberColumnIndex);
        public bool FillComboBoxXML(ref ComboBox cboComboBox, string strXMLFileName, string strSQL, int intConnectionIndex, bool blnRecreateXML, int intDisplayMemberColumnIndex, int intValueMemberColumnIndex);

}
}

Posted 26-Feb-14 4:39am

ndeza

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Comments

ZurdoDev 26-Feb-14 10:42am

What are you trying to do? What are all your FillComboBox... things? They are not declared properly. They look like method definitions but there is no {} body to them.

BillWoodruff 26-Feb-14 12:35pm

You are very confused about what Classes, and Methods, are; you need to get a book on C# and study these.

2 solutions

Solution 2

You don't have to "predeclare" methods like you do in C: so replace teh semicolon with curly brackets to create an empty constructor:

C#

public class clsDSLApp : clsDSLBase
    {
        public clsDSLApp() {}

        public bool FillComboBoxDataSet(ref ComboBox cboComboBox, DataSet dsRecords, int intDisplayMemberColumnIndex, int intValueMemberColumnIndex);
        public bool FillComboBoxSQL(ref ComboBox cboComboBox, string strSQL, int intConnectionIndex, int intDisplayMemberColumnIndex, int intValueMemberColumnIndex);
        public bool FillComboBoxSQL(ref ComboBox cboComboBox, string strSQL, string strConnectionString, int intDisplayMemberColumnIndex, int intValueMemberColumnIndex);
        public bool FillComboBoxXML(ref ComboBox cboComboBox, string strXMLFileName, string strSQL, int intConnectionIndex, bool blnRecreateXML, int intDisplayMemberColumnIndex, int intValueMemberColumnIndex);
}

Or, to have exactly the same effect, just delete the line!

C#

public class clsDSLApp : clsDSLBase
    {
        public bool FillComboBoxDataSet(ref ComboBox cboComboBox, DataSet dsRecords, int intDisplayMemberColumnIndex, int intValueMemberColumnIndex);
        public bool FillComboBoxSQL(ref ComboBox cboComboBox, string strSQL, int intConnectionIndex, int intDisplayMemberColumnIndex, int intValueMemberColumnIndex);
        public bool FillComboBoxSQL(ref ComboBox cboComboBox, string strSQL, string strConnectionString, int intDisplayMemberColumnIndex, int intValueMemberColumnIndex);
        public bool FillComboBoxXML(ref ComboBox cboComboBox, string strXMLFileName, string strSQL, int intConnectionIndex, bool blnRecreateXML, int intDisplayMemberColumnIndex, int intValueMemberColumnIndex);
}

An empty constructor will be created for you behind the scenes.

Posted 26-Feb-14 4:45am

OriginalGriff

Comments

Nicholas Marty 26-Feb-14 10:47am

The problem would still persist here as the other methods are declared in the same manner :)

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Nicholas Marty · Accepted Answer · 2014-02-26T04:43:00

You can't declare methods like this (This is c# not C or C++, so no need for prototyping :))

You need to write those methods like this:

C#

namespace GatePass
{
    public class clsDSLApp : clsDSLBase
    {
        public clsDSLApp() {
            // Do STuff
        }       
 
        // Do other methods likewise
    }
}

or create an interface instead of a class:

C#

namespace GatePass
{
    public interface clsDSLApp
    {

         bool FillComboBoxDataSet(ref ComboBox cboComboBox, DataSet dsRecords, int intDisplayMemberColumnIndex, int intValueMemberColumnIndex);
         bool FillComboBoxSQL(ref ComboBox cboComboBox, string strSQL, int intConnectionIndex, int intDisplayMemberColumnIndex, int intValueMemberColumnIndex);
         bool FillComboBoxSQL(ref ComboBox cboComboBox, string strSQL, string strConnectionString, int intDisplayMemberColumnIndex, int intValueMemberColumnIndex);
         bool FillComboBoxXML(ref ComboBox cboComboBox, string strXMLFileName, string strSQL, int intConnectionIndex, bool blnRecreateXML, int intDisplayMemberColumnIndex, int intValueMemberColumnIndex); 
    }
}

You could also declare the class as abstract and thus force other classes inheriting this class to implement them etc.