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SOURABH DEY
NA
27
10.9k
IErrorInfo.GetDescription(0x80004005)
Mar 11 2010 12:15 PM
Here's an code enclosed with an error
IErrorInfo.GetDescription(0x80004005)
.Plz rply.
public static bool RemoveBook(string BookTitle, int Quantity, string AuthorName, string CategoryName)
{
bool IsSuccess = false;
try
{
OleDbConnection conn = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\\Documents and Settings\\SOURABH DEY\\My Documents\\Visual Studio 2008\\Projects\\Library Management System\\Library Management System\\Library.mdb;");
conn.Open();
OleDbCommand cmd = new OleDbCommand("", conn);
String OleDbCommand = "BEGIN TRANSACTION\r\n";
// rows are not removed from system but inventory status is set as false and such records
// are not at all considered in system for issue etc.
for (int i = 0; i < Quantity; i++)
{
OleDbCommand += "update [Lib_Book_Details] set [Lib_Book_In_Inventory] = 0 where [Lib_Book_ID] = ";
OleDbCommand += "(select top 1 Lib_Book_ID from [Lib_Book_Details] [a] join [Lib_Book_Categories] [b] on [b].[Category_ID] = [a].[Lib_Book_Category] where [a].[Lib_Book_Title] = '" + BookTitle + "' and [a].[Lib_book_issue_status] = 0 and [a].[Lib_Book_In_Inventory] = 1 ";
OleDbCommand += "and [a].[Lib_Book_Author_Name]= '" + AuthorName + "' and [b].[Category_Name] = '" + CategoryName + "')\r\n";
}
OleDbCommand += "Commit Transaction";
cmd.CommandText = OleDbCommand;
int Count = cmd.ExecuteNonQuery();
if (Count >= 1)
{
IsSuccess = true;
}
conn.Close();
}
catch (Exception ex)
{
throw ex;
}
return IsSuccess;
}
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exceptions in 3-tier architecture
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