convert String to Enum

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C#

void lFnGenerateData(StreamReader aReader)
{
  try
  {
    bool lBlnIsColumns = true;
    string[] lArrCols = null;
    List<personalinfo> lstPersonalList = new List<personalinfo>();
    dataGrid1.Columns.Clear();
    while (aReader.Peek() &gt; 0)
    {
      string lStrLine = aReader.ReadLine();
      if (lStrLine == null)
        break;
      if (lStrLine.Trim() == "")
        continue;
      string[] lArrStrCells = null;
      lArrStrCells = lStrLine.Split(';');
      if (lArrStrCells == null)
        continue;
      if (lBlnIsColumns)
      {
        lArrCols = lArrStrCells;
        foreach (string lStrCell in lArrStrCells)
        {
          DataGridTextColumn lDGCol = new DataGridTextColumn();
          lDGCol.Header = lStrCell;
          lDGCol.Binding = new System.Windows.Data.Binding(lStrCell);
          dataGrid1.Columns.Add(lDGCol);
        }
        lBlnIsColumns = false;
        continue;
      }
      if (lArrCols == null)
        continue;
                   
      int lIntColID = 0;
      PersonalInfo objPersonalInfo = new PersonalInfo();
      objPersonalInfo.enumHeader = lArrStrCells[0];
      objPersonalInfo.FirstName = lArrStrCells[1];
      objPersonalInfo.LastName = lArrStrCells[2];
      objPersonalInfo.Address = lArrStrCells[3];
 
      lstPersonalList.Add(objPersonalInfo);
    }
    aReader.Close();
    dataGrid1.ItemsSource = lstPersonalList;
 
  }
  catch (Exception)
  {
    throw;
  }
}

Hello, please help me this above code which is to import CSV file into a WPF DataGrid. My question is, if i want to bind one column with Enum values, what should be here?

C#

PersonalInfo objPersonalInfo = new PersonalInfo(); objPersonalInfo.EnumColumn = lArrStrCells[0];

How to convert String to Enum.

The rest of my code is:

C#

private void _buttonImport_Click(object sender, RoutedEventArgs e)
        {

            try
            {
                lFnLoadFileData();
            }
            catch (Exception ex)
            {
                System.Windows.MessageBox.Show("Input string was not in correct format ,select other file");
            }


        }

        void lFnLoadFileData()
        {
            try
            {
                Microsoft.Win32.OpenFileDialog lObjFileDlge = new Microsoft.Win32.OpenFileDialog();
                lObjFileDlge.Filter = "CSV Files|*.csv";
                lObjFileDlge.FilterIndex = 1;
                lObjFileDlge.Multiselect = false;
                string fName = "";

                bool? lBlnUserclicked = lObjFileDlge.ShowDialog();
                if (lBlnUserclicked != null || lBlnUserclicked == true)
                {
                    fName = lObjFileDlge.FileName;
                }
                if (System.IO.File.Exists(fName) == true)
                {

                    StreamReader lObjStreamReader = new StreamReader(fName);

                    lFnGenerateData(lObjStreamReader);
                    lObjStreamReader.Close();
                }
            }
            catch (Exception)
            {
                throw;
            }

        }
        void lFnGenerateData(StreamReader aReader)
        {
            try
            {
                bool lBlnIsColumns = true;
                string[] lArrCols = null;
                List<Personal> lstPersonalList = new List<Personal>();
                dataGrid1.Columns.Clear();
                while (aReader.Peek() > 0)
                {
                    string lStrLine = aReader.ReadLine();
                    if (lStrLine == null)
                        break;
                    if (lStrLine.Trim() == "")
                        continue;
                    string[] lArrStrCells = null;
                    lArrStrCells = lStrLine.Split(';');
                    if (lArrStrCells == null)
                        continue;
                    if (lBlnIsColumns)
                    {
                        lArrCols = lArrStrCells;
                        foreach (string lStrCell in lArrStrCells)
                        {
                            DataGridTextColumn lDGCol = new DataGridTextColumn();
                            lDGCol.Header = lStrCell;
                            lDGCol.Binding = new System.Windows.Data.Binding(lStrCell);
                            dataGrid1.Columns.Add(lDGCol);
                        }
                        lBlnIsColumns = false;
                        continue;
                    }
                    if (lArrCols == null)
                        continue;

                    int lIntColID = 0;
                   PersonalobjPersonalInfo = new Personal();
                   objPersonalInfo.enumHeader = lArrStrCells[0];
objPersonalInfo.FirstName = lArrStrCells[1];
objPersonalInfo.LastName = lArrStrCells[2];
objPersonalInfo.Address = lArrStrCells[3];

                   
                  
                 

                    lstPersonalList.Add(objPersonalInfo);
                }
                aReader.Close();
                dataGrid1.ItemsSource = lstPersonalList;

            }
            catch (Exception)
            {
                throw;
            }
        }


public enum MyEnum{ one,two,three,four} Public Class Events { public MyEnum Event { get { return _event; } }

Posted 23-Aug-12 22:37pm

getanswer

Updated 23-Aug-12 23:11pm

Pete O'Hanlon

v2

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Comments

Prabhakaran Soundarapandian 24-Aug-12 4:47am

can you post your PersonalInfo DTO/class?

getanswer 24-Aug-12 5:01am

private void _buttonImport_Click(object sender, RoutedEventArgs e)
{

try
{
lFnLoadFileData();
}
catch (Exception ex)
{
System.Windows.MessageBox.Show("Input string was not in correct format ,select other file");
}

}

void lFnLoadFileData()
{
try
{
Microsoft.Win32.OpenFileDialog lObjFileDlge = new Microsoft.Win32.OpenFileDialog();
lObjFileDlge.Filter = "CSV Files|*.csv";
lObjFileDlge.FilterIndex = 1;
lObjFileDlge.Multiselect = false;
string fName = "";

bool? lBlnUserclicked = lObjFileDlge.ShowDialog();
if (lBlnUserclicked != null || lBlnUserclicked == true)
{
fName = lObjFileDlge.FileName;
}
if (System.IO.File.Exists(fName) == true)
{

StreamReader lObjStreamReader = new StreamReader(fName);

lFnGenerateData(lObjStreamReader);
lObjStreamReader.Close();
}
}
catch (Exception)
{
throw;
}

}
void lFnGenerateData(StreamReader aReader)
{
try
{
bool lBlnIsColumns = true;
string[] lArrCols = null;
List<Personal> lstPersonalList = new List<Personal>();
dataGrid1.Columns.Clear();
while (aReader.Peek() > 0)
{
string lStrLine = aReader.ReadLine();
if (lStrLine == null)
break;
if (lStrLine.Trim() == "")
continue;
string[] lArrStrCells = null;
lArrStrCells = lStrLine.Split(';');
if (lArrStrCells == null)
continue;
if (lBlnIsColumns)
{
lArrCols = lArrStrCells;
foreach (string lStrCell in lArrStrCells)
{
DataGridTextColumn lDGCol = new DataGridTextColumn();
lDGCol.Header = lStrCell;
lDGCol.Binding = new System.Windows.Data.Binding(lStrCell);
dataGrid1.Columns.Add(lDGCol);
}
lBlnIsColumns = false;
continue;
}
if (lArrCols == null)
continue;

int lIntColID = 0;
PersonalobjPersonalInfo = new Personal();
objPersonalInfo.enumHeader = lArrStrCells[0];
objPersonalInfo.FirstName = lArrStrCells[1];
objPersonalInfo.LastName = lArrStrCells[2];
objPersonalInfo.Address = lArrStrCells[3];

lstPersonalList.Add(objPersonalInfo);
}
aReader.Close();
dataGrid1.ItemsSource = lstPersonalList;

}
catch (Exception)
{
throw;
}
}

public enum MyEnum{ one,two,three,four} Public Class Events { public MyEnum Event { get { return _event; } }

Prabhakaran Soundarapandian 24-Aug-12 5:09am

Try my solution posted below...

2 solutions

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Jas m · Answer 1 · 2012-08-23T22:55:00

Solution 1

you can use the Enum.Parse method;

EnumType enValue = (EnumType) Enum.Parse(typeof(EnumType), valueString);

Hope this helps :)

Jas

Posted 23-Aug-12 22:55pm

Jas m

Prabhakaran Soundarapandian · Answer 2 · 2012-08-23T22:57:00

Solution 2

Let say your enum is

C#

enum EHeader
   {
      One,
      Two,
      Three
   }

C#

string lArrStrCells[0] = "One";

objPersonalInfo.enumHeader = (EHeader)Enum.Parse(typeof(EHeader), lArrStrCells[0] , true);

// Picking an invalid colour throws an ArgumentException. To
// avoid this, call Enum.IsDefined() first, as follows:

if (Enum.IsDefined(typeof(EHeader), lArrStrCells[0] ))
      objPersonalInfo.enumHeader = (EHeader)Enum.Parse(typeof(EHeader), lArrStrCells[0] , true);

Posted 23-Aug-12 22:57pm

Prabhakaran Soundarapandian

Updated 23-Aug-12 23:10pm

v3

Comments

getanswer 24-Aug-12 5:19am

Hi, i tried with this , Error is " Input string was not in correct format, select other file"

Prabhakaran Soundarapandian 24-Aug-12 5:20am

show your piece of code where you are using it and the DTO and Enum