Excel Driver Error: Cannot Expand Named Range
 

Dear All,

I have created a user data storage with Excel
where I am doing insertions only.
Sometimes the insertions are done as expected
but sometimes they failed and I get the error message
from Excel: "Cannot expand named range".
I have found a couple of messages about this error
but none of them suggested a solution.
I include the code I am using at the end of this message.
Would anyone have an idea about why Excel manages sometimes
to include my data and sometimes not?
Could it come from the nature of my data?
Let me know if you need more details about my code.

I would really appreciate any help

Helene.

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Code for insertion:

char SQLquery[250];
strcpy(SQLquery,
"INSERT INTO ResultTable (Name, File, RunwayNum, TotalTime,
CplexTime, SideCplexTime, SolNum, InsertedChildNum, ImprovedChildNum,
GeneratedChildNum, Fitness, Unfitness) VALUES (\'");
strcat(SQLquery,str1);
strcat(SQLquery,"\',\'");
strcat(SQLquery,str2);
strcat(SQLquery,"\',\'");
strcat(SQLquery,str3);
strcat(SQLquery,"\',");
strcat(SQLquery,strval1);
strcat(SQLquery,",");
strcat(SQLquery,strval2);
strcat(SQLquery,",");
...
strcat(SQLquery,strval9);
strcat(SQLquery,")");

bool result= false;
RETCODE rcode;
HENV henv;
HDBC hdbc;
HSTMT hstmt;
unsigned char longStr[256];
short shortStr;
rcode = ::SQLAllocEnv(&henv);
if(rcode==SQL_SUCCESS) {
rcode = ::SQLAllocConnect(henv,&hdbc);
if(rcode==SQL_SUCCESS) {
rcode = ::SQLDriverConnect(hdbc,0,
(unsigned char *)"DSN=SQLResults",
SQL_NTS,longStr,256,&shortStr, //NULL
SQL_DRIVER_NOPROMPT);
if(rcode==SQL_SUCCESS) {
rcode = ::SQLAllocStmt(hdbc,&hstmt);
if(rcode==SQL_SUCCESS) {
rcode = ::SQLExecDirect(hstmt,
(unsigned char *)SQLquery,SQL_NTS);
if(rcode==SQL_SUCCESS)
result = true;
else
result = false;
::SQLFreeStmt(hstmt,SQL_DROP);
}
::SQLDisconnect(hdbc);
}
::SQLFreeConnect(hdbc);
}
::SQLFreeEnv(henv);
}
return result;
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