hello , does any one have this problem?

In Excel , the exception throw above
system.Runtime.InteropServices.COMException (0x80020005): Type mismatch. see
http://forums.microsoft.com/MSDN/Sho...98970&SiteID=1
this threat have been took care for office 2003 system. it is adolutely
working fine. but it have been a issue in office 2007 system.
/// Set individual cell in a workspace into the value

/// </summary

void SetValue( int r, int c, string s, bool bBold )

{

if( s!= "" )

((Excel.Range)this.Sheet.Cells[r, c ]).FormulaR1C1= s;

((Excel.Range)this.Sheet.Cells[r, c ]).Font.Bold= bBold;

}



/// <summary

/// Set individual cell in a workspace into the value

/// </summary

string GetValue( int r, int c )

{

return ((Excel.Range)this.Sheet.Cells[r, c
]).Value2.ToString();

}



/// <summary

/// Assign a range with the bold

/// </summary

void SetBold( int r, int r1, bool b )

{

((Excel.Range)this.Sheet.get_Range( this.Sheet.Cells[r,1],
this.Sheet.Cells[r1+1,1] )).Font.Bold= b;

-------------------
void ClearAll()

{

int i= YOFFS;

Excel.Range cAll= (Excel.Range)this.Sheet.Rows[
i.ToString()+ ":65535", Type.Missing ];

try

{

cAll.Rows.Ungroup();

cAll.Rows.Ungroup();

cAll.Rows.Ungroup();

}

catch

{ }



cAll.ClearContents();

cAll.Interior.ColorIndex=
Excel.XlColorIndex.xlColorIndexNone;

cAll.Font.Bold= false;

cAll.Locked= true;

cAll= (Excel.Range)this.Sheet.Columns[ "A:IV",
Type.Missing ];

try

{

cAll.Columns.Ungroup();

cAll.Columns.Ungroup();

cAll.Columns.Ungroup();

}

catch

{}

this.Sheet.Application.ActiveWindow.FreezePanes= false;

// Change default groupping behavior

this.Sheet.Outline.AutomaticStyles= false;

this.Sheet.Outline.SummaryRow=
Excel.XlSummaryRow.xlSummaryAbove;

this.Sheet.Outline.SummaryColumn=
Excel.XlSummaryColumn.xlSummaryOnRight;

}



//
------------------------------------------------------------------------------

/// <summary

/// Put all the bases into the worksheet and update the dropdown

/// </summary

protected void UpdateBase()

{//Added the try catch block to capture if any error occurs
while displaying the splash screen - Sreejesh

try

{

DataSet cDs=
this.cService.GetBaseProducts(this.App.UserName, this.DMP_APP_NAME,
DMP_MAIN_FORM );

int x= 1;

// Put bases data into the worksheet

//MessageBox.Show( "Before Foreach" ); //Sreejesh

foreach( DataRow r in cDs.Tables[0].Rows )

{

((Excel.Range)this.Sheet.Cells[ x, 1
]).Value2= r[1];

((Excel.Range)this.Sheet.Cells[ x++, 2
]).Value2= r[0];

}

//MessageBox.Show( "After foreach" ); //Sreejesh

// Create dropdown

Excel.Validation cVal=
((Excel.Range)this.Sheet.Cells[YOFFS - 2, 2]).Validation;

cVal.Delete();

string s= "=A1:A" + (x-1).ToString();

//MessageBox.Show( "aFTER Cval" ); //Sreejesh

cVal.Add(

Excel.XlDVType.xlValidateList,

Excel.XlDVAlertStyle.xlValidAlertStop,

Excel.XlFormatConditionOperator.xlBetween,

s,

"" );

cVal.IgnoreBlank = false;

cVal.InCellDropdown = true;

cVal.InputTitle = "";

cVal.ErrorTitle = "";

cVal.InputMessage = "";

cVal.ErrorMessage = "";

cVal.ShowInput = true;

cVal.ShowError = true;

}

catch(Exception e)

{

throw e;

}

}

//
------------------------------------------------------------------------------


see this code above , there is adsulotely work fine for office 2003. but not
office 2k7

:
when we migrating a previous Excel xls project call to the com objects for
each task, in upgrade to office 2007, using Vsto by C#, we change out some
the template's cs, code for comptible to office 2007 , in the scope of:
sheet. column object, column's max size -- in sheet .Column range from
(AA:ZZ) to (A:IV)

cAll= (Excel.Range)this.Sheet.Columns[ "A:IV", Type.Missing ];

b/c office 2007 is change to IV. then the column cell is not creating in
design time of the project runing , there is a exception throw :

system.Runtime.InteropServices.COMException (0x80020005): Type mismatch.
we not yet know how to ..
have any one got that ? any suggetion? you help are highly appreciated.

Chan



thanks pinky