c# - 使用 ms access(c#) 的 datagridview 出错

Question

下面提到的代码引发错误“INSERT INTO STATEMENT 中的语法错误”

这里我取了名字和数字字段有文字

没有作为自动编号(主键)

con = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=D:/ppd/db1.mdb;Jet OLEDB:Database Password=techsoft");

    da = new OleDbDataAdapter("select * from contacts", con);

    DataSet ds = new DataSet();

    da.Fill(ds, "contacts");

    dt = ds.Tables[0];

    dataGridView1.DataSource = dt;
    OleDbConnection con;

     OleDbDataAdapter da;

     DataTable dt;

     OleDbCommand cm;  

    string insertQuery = @"insert into  contacts(names,number,no) Values (@names,@number,@no)";

    cm = new OleDbCommand(insertQuery, con);

    cm.Parameters.Add("@names", OleDbType.VarChar, 10, "names");

    cm.Parameters.Add("@number", OleDbType.VarChar, 10, "number");

     cm.Parameters.Add("@no", OleDbType.VarChar, 10, "no");

    da.InsertCommand = cm;

    private void button26_Click(object sender, EventArgs e)
            {
                da.Update(dt);
            }

Answer 1

您不能将文本放在数字类型的字段中。如果“no”是自动编号，则根本不给它一个值，它会自动递增。只需更改以下行:

string insertQuery = @"insert into  contacts(names,number,no) Values (@names,@number,@no)";    

到

string insertQuery = @"insert into  contacts(names,number) Values (@names,@number)";    

并删除说

的行

cm.Parameters.Add("@no", OleDbType.VarChar, 10, "no");