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Farhan Shariff
NA
933
241.1k
Windows Form passing DataTable from one button to another
Mar 21 2014 9:18 AM
I want to compare two tables I am Importing two tables I want to compare them
how to pass the table from these buttons to another.
btBrowse= to browse the file
btupload = to upload csv file to datatable
Cmpbutton = I want to compare two Datatables uploaded
I want to pass table1 and table2 to
Cmpbutton_Click(object sender, EventArgs e)
{
DataTable table3 = CompareTwoDataTable(table1, table2);
}
namespace WindowsFormsApplication2
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
}
//
//
//LIMIT SHEET -- table1 Browse and upload
//
private void
btBrowse_Click
(object sender, EventArgs e)
{
OpenFileDialog openFileDialog = new OpenFileDialog();
// To list only csv files, we need to add this filter
openFileDialog.Filter = "|*.csv";
DialogResult result = openFileDialog.ShowDialog();
if (result == DialogResult.OK)
{
tbCSVPath.Text = openFileDialog.FileName;
}
}
private void
btUpload
_Click
(object sender, EventArgs e)
{
try
{
DataTable table1 = GetDataTabletFromCSVFile(tbCSVPath.Text);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "Import CSV File", MessageBoxButtons.OK,MessageBoxIcon.Error);
}
}
private static DataTable GetDataTabletFromCSVFile(string csv_file_path)
{
DataTable table1 = new DataTable("Limits");
using (TextFieldParser csvReader = new TextFieldParser(csv_file_path))
{
csvReader.SetDelimiters(new string[] { "," });
csvReader.HasFieldsEnclosedInQuotes = true;
string[] colFields = csvReader.ReadFields();
foreach (string column in colFields)
{
DataColumn datecolumn1 = new DataColumn(column);
datecolumn1.AllowDBNull = true;
table1.Columns.Add(datecolumn1);
}
while (!csvReader.EndOfData)
{
string[] fieldData = csvReader.ReadFields();
//Making empty value as null
for (int i = 0; i < fieldData.Length; i++)
{
if (fieldData[i] == "")
{
fieldData[i] = null;
}
}
table1.Rows.Add(fieldData);
}
DataRow[] rows1;
rows1 = table1.Select("SKIP = '1'");
foreach (DataRow r in rows1)
r.Delete();
//Real Sheet
table1.Columns.Add("point90", typeof(double));
table1.Columns.Add("point10", typeof(double));
table1.Columns.Add("Median", typeof(double));
//Refrence Sheet
table1.Columns.Add("point90_Refrence", typeof(double));
table1.Columns.Add("point10_Refrence", typeof(double));
table1.Columns.Add("Median_Refrence", typeof(double));
}
return table1;
}
//
//
//Real Sheet - table 2 Browse and upload
//
//
//
private void
btBrowse1_Click
(object sender, EventArgs e)
{
OpenFileDialog openFileDialog = new OpenFileDialog();
// To list only csv files, we need to add this filter
openFileDialog.Filter = "|*.csv";
DialogResult result = openFileDialog.ShowDialog();
if (result == DialogResult.OK)
{
tbCSVPath1.Text = openFileDialog.FileName;
}
}
private void
btUpload1_Click
(object sender, EventArgs e)
{
try
{
DataTable table2 = GetDataTabletFromCSVFile1(tbCSVPath1.Text);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "Import CSV File", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
private static DataTable GetDataTabletFromCSVFile1(string csv_file_path1)
{
DataTable table2 = new DataTable("Real");
using (TextFieldParser csvReader1 = new TextFieldParser(csv_file_path1))
{
csvReader1.SetDelimiters(new string[] { "," });
csvReader1.HasFieldsEnclosedInQuotes = true;
string[] colFields = csvReader1.ReadFields();
foreach (string column in colFields)
{
DataColumn datecolumn2 = new DataColumn(column);
datecolumn2.AllowDBNull = true;
table2.Columns.Add(datecolumn2);
}
while (!csvReader1.EndOfData)
{
string[] fieldData1 = csvReader1.ReadFields();
//Making empty value as null
for (int i = 0; i < fieldData1.Length; i++)
{
if (fieldData1[i] == "")
{
fieldData1[i] = null;
}
}
table2.Rows.Add(fieldData1);
}
}
return table2;
}
// How to pass table1 and table 2 to this click event
private void
Cmpbutton_Click
(object sender, EventArgs e)
{
DataTable table3 = CompareTwoDataTable(table1, table2);
}
private static DataTable CompareTwoDataTable(DataTable table1, DataTable table2)
{
DataTable table3 = new DataTable();
DataRow dr = null;
string filterExp = string.Empty;
for (int i = 0; i < table1.Rows.Count; i++)
{
string col = table1.Rows[i]["Par Name"].ToString();
if (table2.Columns.Contains(col))
{
if (!table3.Columns.Contains(col))
{
table3.Columns.Add(col, typeof(double));
filterExp = filterExp + col + " asc ,";
}
for (int j = 0; j < table2.Rows.Count; j++)
{
if (table3.Rows.Count != table2.Rows.Count)
{
dr = table3.NewRow();
table3.Rows.Add(dr);
}
table3.Rows[j][col] = table2.Rows[j][col];
}
}
}
DataTable resultDt = table3.Clone();
for (int m = 0; m < table3.Columns.Count; m++)
{
DataView dv = new DataView(table3);
dv.Sort = filterExp.Split(',')[m];
table3 = dv.ToTable();
for (int i = 0; i < table3.Rows.Count; i++)
{
if (resultDt.Rows.Count != table3.Rows.Count)
{
resultDt.Rows.Add();
}
resultDt.Rows[i][m] = table3.Rows[i][m];
}
}
return resultDt;
}
}
}
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