foreach (string str in TestWords)
{
//spam
SqlCommand cmd6 = new SqlCommand("select count from keys,files,folders where keys.fileid=files.id and keys.kname='" + str + "' and files.spam=1 and folders.id<>" + FolIter + " and files.folderid<>" + FolIter + " and files.id='" + s[0].ToString + "'", cn);
int i6 = Convert.ToInt16(cmd6.ExecuteScalar());
double temp = Convert.ToDouble((i6 + 1) / (i7 + i8));
//non spam
**error**
SqlCommand cmd9 = new SqlCommand("select count from keys,files,folders where keys.fileid=files.id and keys.kname='"
+ str
+ "' and files.spam=0 and folders.id<>"
+ FolIter
+ " and files.folderid<>"
+ FolIter
+ " and files.id='"
+ s[0].ToString
+ "'", cn);
int i9 = Convert.ToInt16(cmd9.ExecuteScalar());
temp2 = Convert.ToDouble((i9 + 1) / (i7 + i8));
Sdoc = Convert.ToDouble(Sdoc * temp);
NsDoc = Convert.ToDouble(NsDoc * temp2);
}
我得到的错误是:运算符“+”不能应用于“字符串”和“方法组”类型的操作数
最佳答案
你必须调用方法:
s[0].ToString()
关于c# Sql命令错误,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/3658438/