Remember data of previous VI/program run
Hello NI Developers!
Is there a way for compiled VI to remember data for next open?
I mean: I have File-open dialog when I press button, I want that it start at default directory which was last time opened. Is there a way to do that program will remember last opened directory and next time open it for a default path ? I wanted to do this without saving any extra files with this info.
Thanks in advance.
Message Edited by ACiDuser on 11-07-2009 08:15 PM
Well, you have to save that information someplace. If you don't want to create extra files then you can save it in the application's configuration (.ini) file. Or, if you're in Windows you can save it to the registry. At startup you can just set the start path for the file control via a property node.
Attachments:
Example_VI_BD.png 1 KB
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Missing Header Row When Exporting Data to Excel and Program Runs Slow
Hello all,
I am new to programming. I’ve dabbled with VB.NET at times over the years but this is the first time I’m trying C#. Although, it’s been quite a while since I’ve done any type of programming other than writing SQL queries at work. For the sake of trying to
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When I click the button to run the SQL query and load the DataGridView it runs immediately.
I plan on taking this project further such as adding date parameters including validation on the dates and then maybe adding buttons that can be used to insert, update and delete records. But I don’t want to go any further until the two issues mentioned
above are resolved. Any assistance / guidance will be greatly appreciated. Here’s the code:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Data.SqlClient;
using Exccel = Microsoft.Office.Interop.Excel;
using System.IO;
namespace Bills_DB_DataGridView
public
partial
class
Form1 :
Form
SqlCommand sqlCMD;
SqlDataAdapter sqlDA;
SqlCommandBuilder sqlCB;
DataSet sqlDS;
DataTable sqlDT;
public Form1()
InitializeComponent();
private
void btnExit_Click(object sender,
EventArgs e)
this.Close();
private
void btnLoad_Click(object sender,
EventArgs e)
string sqlCon =
"Data Source = localhost\\DAVE_DB; Initial Catalog=Bills;Integrated security = true;";
string sqlQry =
"SELECT * FROM Acct ORDER BY Name, PaymentDate";
SqlConnection connection =
new
SqlConnection(sqlCon);
connection.Open();
sqlCMD = new
SqlCommand(sqlQry, connection);
sqlDA = new
SqlDataAdapter(sqlCMD);
sqlCB = new
SqlCommandBuilder(sqlDA);
sqlDS = new
DataSet();
sqlDA.Fill(sqlDS, "Acct");
sqlDT = sqlDS.Tables["Acct"];
connection.Close();
dataGridView1.DataSource = sqlDS.Tables["Acct"];
dataGridView1.SelectionMode =
DataGridViewSelectionMode.FullRowSelect;
private
void btnExport_Click(object sender,
EventArgs e)
Microsoft.Office.Interop.Excel.Application xlApp;
Microsoft.Office.Interop.Excel.Workbook xlWorkBook;
Microsoft.Office.Interop.Excel.Worksheet xlWorkSheet;
object misValue = System.Reflection.Missing.Value;
Int32 i, j;
xlApp = new Microsoft.Office.Interop.Excel.Application();
xlWorkBook = xlApp.Workbooks.Add(misValue);
xlWorkSheet = (Microsoft.Office.Interop.Excel.Worksheet)xlWorkBook.Worksheets.get_Item(1);
for (i = 0; i <= dataGridView1.RowCount - 2; i++)
for (j = 0; j <= dataGridView1.ColumnCount - 1; j++)
xlWorkSheet.Cells[i + 1, j + 1] = dataGridView1[j, i].Value.ToString();
xlWorkSheet.Cells[1, 2].EntireColumn.NumberFormat = "@";
//Format column 2 to text
xlWorkSheet.Cells[1, 2].HorizontalAlignment = Microsoft.Office.Interop.Excel.XlHAlign.xlHAlignRight;
xlWorkBook.SaveAs(@"c:\Bills\Bills.xls", Microsoft.Office.Interop.Excel.XlFileFormat.xlWorkbookNormal,
misValue, misValue, misValue, misValue, Microsoft.Office.Interop.Excel.XlSaveAsAccessMode.xlExclusive, misValue, misValue, misValue, misValue, misValue);
xlWorkBook.Close(true, misValue, misValue);
xlApp.Quit();
releaseObject(xlWorkSheet);
releaseObject(xlWorkBook);
releaseObject(xlApp);
private
void releaseObject(object obj)
try
System.Runtime.InteropServices.Marshal.ReleaseComObject(obj);
obj = null;
catch (Exception ex)
obj = null;
MessageBox.Show("Exception Occured while releasing object "
+ ex.ToString());
finally
GC.Collect();
Thank you,
Dave
David YoungHello again Kristin,
I tried the code snippet to include the headers in the Excel file but it didn't work for me. Maybe I put the code in the wrong place? Again I have put the code below including where I placed the snippet. I get no error message and the application runs. Am
I doing something wrong?
Thank you,
Dave
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Data.SqlClient;
using Exccel = Microsoft.Office.Interop.Excel;
using System.IO;
namespace Bills_DB_DataGridView
public partial class Form1 : Form
SqlCommand sqlCMD;
SqlDataAdapter sqlDA;
SqlCommandBuilder sqlCB;
DataSet sqlDS;
DataTable sqlDT;
public Form1()
InitializeComponent();
private void btnExit_Click(object sender, EventArgs e)
this.Close();
private void btnLoad_Click(object sender, EventArgs e)
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string sqlQry = "SELECT * FROM Acct ORDER BY Name, PaymentDate";
SqlConnection connection = new SqlConnection(sqlCon);
connection.Open();
sqlCMD = new SqlCommand(sqlQry, connection);
sqlDA = new SqlDataAdapter(sqlCMD);
sqlCB = new SqlCommandBuilder(sqlDA);
sqlDS = new DataSet();
sqlDA.Fill(sqlDS, "Acct");
sqlDT = sqlDS.Tables["Acct"];
connection.Close();
dataGridView1.DataSource = sqlDS.Tables["Acct"];
dataGridView1.SelectionMode = DataGridViewSelectionMode.FullRowSelect;
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Microsoft.Office.Interop.Excel.Application xlApp;
Microsoft.Office.Interop.Excel.Workbook xlWorkBook;
Microsoft.Office.Interop.Excel.Worksheet xlWorkSheet;
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Int32 i, j;
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xlWorkSheet = (Microsoft.Office.Interop.Excel.Worksheet)xlWorkBook.Worksheets.get_Item(1);
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Message was edited by:
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Problem Description :
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Solved!
Go to Solution.
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Example.vi 22 KBHi Erik,
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Dear Experts, Please help. Thanks.
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Impact in removing one of 2 Essbase servers in current 11.1.2.1 platform
Hello, Here is what I'm trying to do: I have Essbase installed on 2 servers and thus registered in Shared Services (epm registry). However, I will need to remove one Essbase server from the current configuration. I was thinking of uninstalling Essbas
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Where do I find activation code for photoshop subscription?
I just bought the subscription offer for Photoshop CC + Lightroom, buty haven´t received activation code. How can I get my activation code?