Convert List to String array

Question

3.50/5 (2 votes)

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Hi,

I have these objects

SQL

public class OutputField
   {
       public string[] inputFieldValue;
   }

   public class OutputGroups
   {
       public OutputField input1 = new OutputField();
       public OutputField input2= new OutputField();
      
   }

and a button with 2 checkboxes.

SQL

private void btnSelect_Click(object sender, EventArgs e)
        {
            try
            {
                List<OutputGroups> _OutputToList = new List<OutputGroups>();

                OutputGroups _1Output = new OutputGroups();

                fileName = parameters.directory;
                sheetNumber = cboSelectWorksheet.SelectedIndex + 1;
                string[] strInput1 = { "Input Address", "Input City", "Input State", "Input Zip" };
                string[] strInput2= { "Indicator", "Return" };
               
              
                if (checkbox1.Checked)
                {                 
                    _1Output.input.inputFieldValue = strInput;
                    _OutputToList.Add(_1Output);                   
                }
                if (checkbox2.Checked)
                {
                    _1Output.LACSLink.inputFieldValue = strLACSLink;
                    _OutputToList.Add(_1Output);   
                }

                string[] allOutput = { };
                getData.AppendInputColumns(fileName, sheetNumber, allOutput);
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }       
    }

When i check the checkbox1, all string value from strInput1 will be added to _OutputToList.Add(_1Output). If I check 2 boxes, string values from strInput1 and strInput2 will be added to

How Can i put the all string from List<outputgroups> _OutputToList = new List<outputgroups>()
to this string array
string[] allOutput ={??????????};

thanks,

Posted 30-Jul-12 7:38am

chaupha

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Comments

Kenneth Haugland 30-Jul-12 13:39pm

Think you use CopyTo() or ToArray methoid on the list...

Sergey Alexandrovich Kryukov 30-Jul-12 13:51pm

What's the problem?
--SA

1 solution

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Sergey Alexandrovich Kryukov · Answer 1 · 2012-07-30T07:51:00

Create an instance of System.Collections.Generic.List<string></string>, add all strings one by one to it, and then return string[] as System.Collections.Generic.List<string>.ToArray()</string>.

Alternatively, if the length of the string array is known in advance (let's say, it is int count = _OutputToList.Count), output it all directly to the string array:

C#

string[] stringArray = new string[count];
for (int index = 0; index < count; ++index)
   // copy elements as requred ...

Keep it simple, I would advise. ;-)

—SA