I have a csv file like this :
george,
nick,
mary,
john,
micheal
The user can make a file he likes. So he could have 4 or 5 or 28 lines for example.
I have an other csv file, that I assigned it to a ArrayList named fileList1 . This file is an agenda.
If a name in the agenda isn't in the csv, that will be given, then print a message.(this is what I need to find). The point is that both the csv can be dymanical. The number of lines is not standar.
I have also a table, colB[]. This table has the list of files that will compare with columns.
The problem is that I can not select a specific column in the arraylist because it is an arraylist.
ArrayList fileList1 = new ArrayList();
string stringforData;
private void button1_Click(object sender, EventArgs e)
{
// opens **BROWSE**
string filename = "";
DialogResult result = openFileDialog1.ShowDialog();
if (result == DialogResult.OK)
{
filename = openFileDialog1.FileName;
textBox1.Text = filename;
// Read the file and display it line by line.
string line;
System.IO.StreamReader file1 = new System.IO.StreamReader(textBox1.Text); //reads the path from textbox
stringforData = file1.ReadLine();
while ((line = file1.ReadLine()) != null)
{
// bazei stoixeia mesa ston pinaka
fileList1.Add(line.Split(';'));//split the file and assign it in //the fileList1
}
file1.Close();
}
}
private void button3_Click(object sender, EventArgs e)
{
this.textBox2.Clear();
string[] colB = new string[];
for (int j = 0; j < colB.Length; j++)
{
if (Path.GetExtension(colB[j]) == ".csv")
{
string path = Path.GetDirectoryName(textBox1.Text);
string g = Path.Combine(path, colB[j]);
textBox2.Text += "the path is " + g + " " + Environment.NewLine;
System.IO.StreamReader gi = new System.IO.StreamReader(g);
string itemss;
ArrayList ArrayForLists=new ArrayList();
while ((itemss = gi.ReadLine()) != null)
{
ArrayForLists.AddRange(itemss.Split(';'));// assign to the arraylist the list that we are searching
}
}
It seems that an ArrayList is not a good option because you can't select the desired column. Why not use a free C# CSV parser:
http://www.filehelpers.com/
Found from here:
CSV parser/reader for C#?
In the link above there's also an example that loads a CSV into a DataTable, which gives you the option to reference a column (as opposed to an ArrayList).
Edit:
I've pasted the code from the given link:
static DataTable CsvToDataTable(string strFileName)
{
DataTable dataTable = new DataTable("DataTable Name");
using (OleDbConnection conn = new OleDbConnection("Provider=Microsoft.Jet.OleDb.4.0; Data Source = " + Directory.GetCurrentDirectory() + "; Extended Properties = \"Text;HDR=YES;FMT=Delimited\""))
{
conn.Open();
string strQuery = "SELECT * FROM [" + strFileName + "]";
OleDbDataAdapter adapter = new System.Data.OleDb.OleDbDataAdapter(strQuery, conn);
adapter.Fill(dataTable);
}
return dataTable;
}
Related
I'm a newbie in C# programming language. I need some guide on how can I search image in textbox which just typing image name that contain 12345. This is because each image name in my folder is naming like this > JUN (12345). I want the image display at picturebox after typing 12345 in textbox. Here is my code that I already try it not display image that contain 12345. Hope anyone can help me. Thanks
private void textBoxWorkNo_KeyUp(object sender, KeyEventArgs e)
{
if (e.KeyCode == Keys.Enter)
{
if (textBoxWorkNo.Text != "")
{
//Do something
string selectSql = "select name, empno, icnum, passport, deptno, section, designation from m_employee where workno=#workno";
SqlCommand cmd = new SqlCommand(selectSql, con);
cmd.Parameters.AddWithValue("#workno", textBoxWorkNo.Text);
bool isDataFound = false;
try
{
con.Open();
using (SqlDataReader read = cmd.ExecuteReader())
{
while (read.Read())
{
isDataFound = true;
textBoxEmplNo.Text = (read["empno"].ToString());
textBoxName.Text = (read["name"].ToString());
textBoxICPass.Text = (read["icnum"].ToString());
textBoxPassport.Text = (read["passport"].ToString());
textBoxDept.Text = (read["deptno"].ToString());
textBoxSection.Text = (read["section"].ToString());
textBoxDesignation.Text = (read["designation"].ToString());
//BaseFolder that contains the multiple folders
//If the folders don't share the same base folder make an array with full paths
string baseFolder = "C:\\Users\\hamizah\\Desktop\\photo";
string[] employeeFolders = Directory.GetDirectories(baseFolder);
//Search image
string imgName = "%'" + textBoxEmplNo.Text + "%'" + ".jpg";
//Bool to see if file is found after checking all
bool fileFound = false;
foreach (var folderName in employeeFolders)
{
var path = Path.Combine(folderName, imgName);
if (File.Exists(path))
{
pictureBox1.Visible = true;
pictureBox1.Image = Image.FromFile(path);
fileFound = true;
//If you want to stop looking, break; here
}
}
if (!fileFound)
{
//Display message that No such image found
pictureBox1.Visible = true;
pictureBox1.Image =
Image.FromFile(#"C:\Users\hamizah\Desktop\images\photo\No-image-found.jpg");
}
dataGridView1.Visible = false;
}
}
if (!isDataFound)
{
textBoxEmplNo.Text = "";
textBoxWorkNo.Text = "";
textBoxName.Text = "";
// Display message here that no values found
MessageBox.Show("No Result Found");
}
}
finally
{
con.Close();
}
}
else
{
textBoxEmplNo.Text = "";
textBoxName.Text = "";
}
}
}
File.Exists looks for one specific file. There is no file with weird name %'12345%'.jpg I guess. You can use this form:
foreach (var f in Directory.EnumerateFiles(rootPath, "*12345*.jpg")){
...
}
If it's already on the disk just use Directory.GetFiles() like so:
var strings = Directory.GetFiles(".","*12345*");
foreach (var s in strings)
{
Debug.Write(s);
}
You can use below code to get the files in the specific directory, which has a partial matching names as input value.
For each directory you are iterating through get the directory info first:
DirectoryInfo directoryInfo = new DirectoryInfo(#"c:\");
Then get the files as mentioned below:
FileInfo[] fileInfoArray = directoryInfo.GetFiles("*" + inputFileName + "*.*");
Then you can check the fileInfoArray for the file you are looking for. It can return multiple file info, depending on your input.
For reference: added the actual code here:
string partialInputName = "12345"; //textbox input value or whatever you want to input
string[] directories = Directory.GetDirectories(#"C:\Code");
FileInfo fileinDir;
foreach(string dir in directories)
{
DirectoryInfo dirInfo = new DirectoryInfo(dir);
if (dirInfo.Exists)
{
//taking the first (FirstOrDefault()), considering that all files have a unique name with respect to the input value that you are giving. so it should fetch only one file every time you query
fileinDir = dirInfo.GetFiles("*" + partialInputName + "*.*").FirstOrDefault();
}
}
I have a script that imports a csv file and reads each line to update the corresponding item in Sitecore. It works for many of the products but the problem is for some products where certain cells in the row have commas in them (such as the product description).
protected void SubmitButton_Click(object sender, EventArgs e)
{
if (UpdateFile.PostedFile != null)
{
var file = UpdateFile.PostedFile;
// check if valid csv file
message.InnerText = "Updating...";
Sitecore.Context.SetActiveSite("backedbybayer");
_database = Database.GetDatabase("master");
SitecoreContext context = new SitecoreContext(_database);
Item homeNode = context.GetHomeItem<Item>();
var productsItems =
homeNode.Axes.GetDescendants()
.Where(
child =>
child.TemplateID == new ID(TemplateFactory.FindTemplateId<IProductDetailPageItem>()));
try
{
using (StreamReader sr = new StreamReader(file.InputStream))
{
var firstLine = true;
string currentLine;
var productIdIndex = 0;
var industryIdIndex = 0;
var categoryIdIndex = 0;
var pestIdIndex = 0;
var titleIndex = 0;
string title;
string productId;
string categoryIds;
string industryIds;
while ((currentLine = sr.ReadLine()) != null)
{
var data = currentLine.Split(',').ToList();
if (firstLine)
{
// find index of the important columns
productIdIndex = data.IndexOf("ProductId");
industryIdIndex = data.IndexOf("PrimaryIndustryId");
categoryIdIndex = data.IndexOf("PrimaryCategoryId");
titleIndex = data.IndexOf("Title");
firstLine = false;
continue;
}
title = data[titleIndex];
productId = data[productIdIndex];
categoryIds = data[categoryIdIndex];
industryIds = data[industryIdIndex];
var products = productsItems.Where(x => x.DisplayName == title);
foreach (var product in products)
{
product.Editing.BeginEdit();
try
{
product.Fields["Product Id"].Value = productId;
product.Fields["Product Industry Ids"].Value = industryIds;
product.Fields["Category Ids"].Value = categoryIds;
}
finally
{
product.Editing.EndEdit();
}
}
}
}
// when done
message.InnerText = "Complete";
}
catch (Exception ex)
{
message.InnerText = "Error reading file";
}
}
}
The problem is that when a description field has commas, like "Product is an effective, preventative biofungicide," it gets split as well and throws off the index, so categoryIds = data[8] gets the wrong value.
The spreadsheet is data that is provided by our client, so I would rather not require the client to edit the file unless necessary. Is there a way I can handle this in my code? Is there a different way I can read the file that won't split everything by comma?
I suggest use Ado.Net, If the field's data are inside quotes and it will parse it like a field and ignore any commas inside this..
Code Example:
static DataTable GetDataTableFromCsv(string path, bool isFirstRowHeader)
{
string header = isFirstRowHeader ? "Yes" : "No";
string pathOnly = Path.GetDirectoryName(path);
string fileName = Path.GetFileName(path);
string sql = #"SELECT * FROM [" + fileName + "]";
using(OleDbConnection connection = new OleDbConnection(
#"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + pathOnly +
";Extended Properties=\"Text;HDR=" + header + "\""))
using(OleDbCommand command = new OleDbCommand(sql, connection))
using(OleDbDataAdapter adapter = new OleDbDataAdapter(command))
{
DataTable dataTable = new DataTable();
dataTable.Locale = CultureInfo.CurrentCulture;
adapter.Fill(dataTable);
return dataTable;
}
}
I want the user to be able to chose a text file written in a certain way (1 number per line) and then have the file converted into an array. I have bits and pieces of it working but I cant get it to all work at the same time. Any help would be appreciated.
private void Load_Button_Click(object sender, EventArgs e)
{
int counter = 0;
string line;
List<int> list = new List<int>();
string fileName = "";
//OpenFileDialog ofd = new OpenFileDialog();
//ofd.Filter = "TXT File|*.txt";
//ofd.Title = "Open File";
// if (ofd.ShowDialog() == System.Windows.Forms.DialogResult.OK)
// {
File_Label.Text = "C:/Users/Neilan/Desktop/sample.txt";
//fileName = "#" + ofd.SafeFileName;
//MessageBox.Show(ofd.FileName);
System.IO.StreamReader file = new System.IO.StreamReader(#"C:\Users\Neilan\Desktop\sample.txt");
while ((line = file.ReadLine()) != null)
{
Unsorted_Box.Text += line + ", ";
//list.Add(int.Parse(fileName));
counter++;
}
dataArray = list.ToArray();
// }
}
You can do this.
var numberarray = File.ReadAllLines("stringpath").Select(int.Parse).ToArray();
Looking at your code, I guess you want to show these values in comma separated format to user. You can achieve this with following code snippet.
Unsorted_Box.Text = String.Join(",", numberarray.ToArray());
Hope this helps !
This problem can be solved by one line
var resultArray = Array.ConvertAll(System.IO.File.ReadAllLines("filename.type"), str => int.Parse(str));
Instead of "filename.type" you can put something like File_Label.Text
I'm trying to allow the user to add another entry to the CSV file my program is building. It is building it out of a database like this:
public void CreateCsvFile()
{
var filepath = #"F:\A2 Computing\C# Programming Project\ScheduleFile.csv";
var ListGather = new PaceCalculator();
var records =
from record in ListGather.NameGain()
.Zip(ListGather.PaceGain(),
(a, b) => new { Name = a, Pace = b })
group record.Pace by record.Name into grs
select String.Format("{0},{1}", grs.Key, grs.Average()); //reduces the list of integers down to a single double value by computing the average.
File.WriteAllLines(filepath, records);
}
I then am calling it into a datagridview like this:
private void button2_Click(object sender, EventArgs e)
{
CreateExtFile CsvCreate = new CreateExtFile();
CsvCreate.CreateCsvFile();
return;
}
private void LoadAthletes()
{
string delimiter = ",";
string tableName = "Schedule Table";
string fileName = #"F:\A2 Computing\C# Programming Project\ScheduleFile.csv";
DataSet dataset = new DataSet();
StreamReader sr = new StreamReader(fileName);
dataset.Tables.Add(tableName);
dataset.Tables[tableName].Columns.Add("Athlete Name");
dataset.Tables[tableName].Columns.Add("Pace Per Mile");
string allData = sr.ReadToEnd();
string[] rows = allData.Split("\r".ToCharArray());
foreach (string r in rows)
{
string[] items = r.Split(delimiter.ToCharArray());
dataset.Tables[tableName].Rows.Add(items);
}
this.dataGridView1.DataSource = dataset.Tables[0].DefaultView;
}
A button opens a window which contains fields to add a new entry to the csv file. This is how I am doing this:
private void AddToScheduleBtn_Click(object sender, EventArgs e)
{
string FileName = #"F:\A2 Computing\C# Programming Project\ScheduleFile.csv";
string AthleteDetails = textBox1.Text + "," + textBox2.Text;
File.AppendAllText(FileName, AthleteDetails);
AddToSchedule.ActiveForm.Close();
}
Although this works once, When I try and add another entry to my csv file again it says it is open in another process and the program crashes. When the data first appears in my datagridview, there is an empty row at the bottom which there shouldn't be. What is the best way of allowing me to re-use the process so I can append to the file more than once?
I think your line,
StreamReader sr = new StreamReader(fileName);
has the file opened. You want to do the following:
string allData = sr.ReadToEnd();
sr.Close();
sr.Dispose();
I didn't build your code, but this error is usually raised when the file reader was not closed :)
You should add sr.close() to your LoadAthletes method or implement the using for an automatic closing:
using (StreamReader sr = new StreamReader(fileName))
{
allData = sr.ReadToEnd();
}
Or use the following method :
allData = File.ReadAllText(fileName);
Hope this Help
For more information see this question do-i-need-to-explicitly-close-the-streamreader-in-c-sharp-when-using-it-to-load
private void button3_Click(object sender, EventArgs e)
{
SaveFileDialog file = new SaveFileDialog {
Title = "Save File To",
FileName = cmbCategory.Text + " " + Description.Text + ".csv",
Filter = "CSV (*.csv)|*.csv",
FilterIndex = 0,
InitialDirectory = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments)
};
if (file.ShowDialog() == DialogResult.OK) {
string[] headers = lstResult.Columns
.OfType<ColumnHeader>()
.Select(header => header.Text.Trim()).ToArray();
string[][] items = lstResult.Items
.OfType<ListViewItem>()
.Select(Details => Details.SubItems
.OfType<ListViewItem.ListViewSubItem>()
.Select(Detail => Detail.Text).ToArray()).ToArray();
string table = string.Join(",", headers) + Environment.NewLine;
foreach (string[] a in items)
{
table += string.Join(",", a) + Environment.NewLine;
}
table = table.TrimEnd('\r', '\n');
System.IO.File.WriteAllText(file.FileName, table);
}
}
so far i tried to autoformat my columns when data values are transferred to excel file but it doesn't go with this "lstResult.Columns.Autofit() why is it? because when i open my excel file it shows up that i have to resize each column base on the width of the data values been exported. please Help