//Declare these two variables globally so you can access them from both
//Button1 and Button2.
Excel.Application objApp;
Excel._Workbook objBook;
private void button1_Click(object sender, System.EventArgs e)
{
Excel.Workbooks objBooks;
Excel.Sheets objSheets;
Excel._Worksheet objSheet;
Excel.Range range;
try
{
// Instantiate Excel and start a new workbook.
objApp = new Excel.Application();
objBooks = objApp.Workbooks;
objBook = objBooks.Add( Missing.Value );
objSheets = objBook.Worksheets;
objSheet = (Excel._Worksheet)objSheets.get_Item(1);
//Get the range where the starting cell has the address
//m_sStartingCell and its dimensions are m_iNumRows x m_iNumCols.
range = objSheet.get_Range("A1", Missing.Value);
range = range.get_Resize(5, 5);
if (this.FillWithStrings.Checked == false)
{
//Create an array.
double[,] saRet = new double[5, 5];
//Fill the array.
for (long iRow = 0; iRow < 5; iRow++)
{
for (long iCol = 0; iCol < 5; iCol++)
{
//Put a counter in the cell.
saRet[iRow, iCol] = iRow * iCol;
}
}
//Set the range value to the array.
range.set_Value(Missing.Value, saRet );
}
else
{
//Create an array.
string[,] saRet = new string[5, 5];
//Fill the array.
for (long iRow = 0; iRow < 5; iRow++)
{
for (long iCol = 0; iCol < 5; iCol++)
{
//Put the row and column address in the cell.
saRet[iRow, iCol] = iRow.ToString() + "|" + iCol.ToString();
}
}
//Set the range value to the array.
range.set_Value(Missing.Value, saRet );
}
//Return control of Excel to the user.
objApp.Visible = true;
objApp.UserControl = true;
}
catch( Exception theException )
{
String errorMessage;
errorMessage = "Error: ";
errorMessage = String.Concat( errorMessage, theException.Message );
errorMessage = String.Concat( errorMessage, " Line: " );
errorMessage = String.Concat( errorMessage, theException.Source );
MessageBox.Show( errorMessage, "Error" );
}
}
private void button2_Click(object sender, System.EventArgs e)
{
Excel.Sheets objSheets;
Excel._Worksheet objSheet;
Excel.Range range;
try
{
try
{
//Get a reference to the first sheet of the workbook.
objSheets = objBook.Worksheets;
objSheet = (Excel._Worksheet)objSheets.get_Item(1);
}
catch( Exception theException )
{
String errorMessage;
errorMessage = "Can't find the Excel workbook. Try clicking Button1 " +
"to create an Excel workbook with data before running Button2.";
MessageBox.Show( errorMessage, "Missing Workbook?");
//You can't automate Excel if you can't find the data you created, so
//leave the subroutine.
return;
}
//Get a range of data.
range = objSheet.get_Range("A1", "E5");
//Retrieve the data from the range.
Object[,] saRet;
saRet = (System.Object[,])range.get_Value( Missing.Value );
//Determine the dimensions of the array.
long iRows;
long iCols;
iRows = saRet.GetUpperBound(0);
iCols = saRet.GetUpperBound(1);
//Build a string that contains the data of the array.
String valueString;
valueString = "Array Data\n";
for (long rowCounter = 1; rowCounter <= iRows; rowCounter++)
{
for (long colCounter = 1; colCounter <= iCols; colCounter++)
{
//Write the next value into the string.
valueString = String.Concat(valueString,
saRet[rowCounter, colCounter].ToString() + ", ");
}
//Write in a new line.
valueString = String.Concat(valueString, "\n");
}
//Report the value of the array.
MessageBox.Show(valueString, "Array Values");
}
catch( Exception theException )
{
String errorMessage;
errorMessage = "Error: ";
errorMessage = String.Concat( errorMessage, theException.Message );
errorMessage = String.Concat( errorMessage, " Line: " );
errorMessage = String.Concat( errorMessage, theException.Source );
MessageBox.Show( errorMessage, "Error" );
}
}