使用SQL参数对UPDATE语句的问题在C# [英] Problems with SQL Parameters in C# on UPDATE statement
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问题描述
我想更新数据。每当我使用参数化查询,它给了我命令执行过程中致命错误遇到错误
。
I'm trying to update data. Whenever I use a parameterized query it gives me the error Fatal Error Encountered during command execution
.
下面是我的code:
public void updateAccount(Int32 cashierid, string cashieruser, string isadmin, string cashierfname, string cashiermname, string cashierlname, string cashierpass)
{
con.ConnectionString = conString;
String sql = "UPDATE cashieraccount SET cashieruser = ?cashieruser, cashierpass = ?cashierpass, isadmin = ?isadmin, cashierfname = ?cashierfname, cashiermname = ?cashiermname, cashierlname = ?cashierlname";
sql += "WHERE cashierid = ?cashierid";
try
{
con.Open();
MySqlCommand cmd = new MySqlCommand(sql, con);
cmd.Parameters.AddWithValue("?cashieruser", cashieruser);
cmd.Parameters.AddWithValue("?cashierpass", cashierpass);
cmd.Parameters.AddWithValue("?isadmin", isadmin);
cmd.Parameters.AddWithValue("?cashierfname", cashierfname);
cmd.Parameters.AddWithValue("?cashiermname", cashiermname);
cmd.Parameters.AddWithValue("?cashierlname", cashierlname);
cmd.Parameters.AddWithValue("?cashierid", cashierid);
cmd.ExecuteNonQuery(); **//Fatar Error Encountered during command execution**
}
finally
{
con.Close();
}
}
有没有人有什么建议?
Does anyone have any suggestions?
推荐答案
我失去了你后面参数的空白,在其中,
子句之前:
I'm missing a white-space behind your parameters, before the where
clause:
String sql = "UPDATE cashieraccount SET cashieruser = ?cashieruser, cashierpass = ?cashierpass, isadmin = ?isadmin, cashierfname = ?cashierfname, cashiermname = ?cashiermname, cashierlname = ?cashierlname";
sql += " WHERE cashierid = ?cashierid";
// here ^
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