这个判断字段存在的语法哪里存在错误呢

Question

  string StrSql = "select count(*)from" + TableName + "where Name= '" + SlecetName.Trim() + "'";

Answer 1

改成这样试试看呢 

string StrSql = "select count(*) from" + TableName + " where Name = '" + SlecetName.Trim() + "'";