C#

public static int SendId;
...
SendId = Convert.ToInt32(txtIDPersonel.Text);
.....
 public int Get_SendID
{
   get { return SendId; }
}

private void Test_Load(object sender, EventArgs e)
{
    int ReciveID;
    frmBankProject BankPrj = new frmBankProject();
    ReciveID = Convert.ToInt32(BankPrj.Get_SendID.ToString());
    label1.Text = ReciveID.ToString();
}

private void btnShowData_Click(object sender, EventArgs e)
{
    int ReciveID;
    frmBankProject BankPrj = new frmBankProject();
    ReciveID = Convert.ToInt32(BankPrj.Get_SendID.ToString());
    string strFilter;
    strFilter = "SELECT * From MyTable WHERE PersonID='" +
        Convert.ToInt32(label1.Text) + "'";
    try
    {
        SalaryConnection = new OleDbConnection(conString);
        dsSalary = new DataSet();
        SalaryConnection.Open();
        daSalary = new OleDbDataAdapter(strFilter, SalaryConnection);
        daSalary.Fill(dsSalary, "myTable");
        dgSalaryTable.DataSource = dsSalary.Tables["MyTable"].DefaultView;
        SalaryConnection.Close();
    }
    catch (Exception exCode)
    {
        MessageBox.Show("Error in ConnectionCode " + exCode.ToString());
        Application.Exit();
    }
}

using Microsoft.Office.Core;
using Microsoft.Office.Interop.PowerPoint;
public partial class _Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        var app = new Microsoft.Office.Interop.PowerPoint.Application();
        var pres = app.Presentations;
        var file = pres.Open(@"C:\test\test.pptx", MsoTriState.msoTrue, MsoTriState.msoTrue, MsoTriState.msoFalse);
        file.Export(@"C:\testNew.png", "PNG");
    }
}