我想这样做一个选择，它工作得很好

 字符串str =
    SELECT * FROM自由权的JOIN TestTest ON FREE.DOCNO = TestTest.DOCNO;
数据表DT =新的DataTable（）;
OdbcDataAdapter的DA =新OdbcDataAdapter的（STR，odbconn）;
da.Fill（DT）;
 

我想它来创建一个.dbf和我得到这个OdbcException：

 字符串STR0 =创建表人士（名称char（50），市CHAR（50），电话CHAR（20），邮编十进制（5））;
的OdbcCommand CMD =新的OdbcCommand（STR0，odbconn）;
cmd.ExecuteNonQuery（）;
 

错误[42000] [微软] [ODBC dBase驱动程序]语法错误的字段定义。

您的问题是由引起邮编十进制（5），作为ODBC dBase驱动程序不喜欢它。把我的头顶部，并快速谷歌之后，我不能拿出一个语法，它的将会的容忍。它接受它，如果你使用OLEDB提供而是相当欢快，内容如下：

 使用（VAR dBaseConnection =新的OleDbConnection（
    @供应商= Microsoft.Jet.OLEDB.4.0;+
    @数据源= C：用户 RobertWray 文档 dBase的;+
    @扩展属性= dBase IV资料））
{
    dBaseConnection.Open（）;

    串createTableSyntax =
        创建表人+
        （名称char（50），市CHAR（50），电话CHAR（20），邮编十进制（5））;
    VAR CMD =新的OleDbCommand（createTableSyntax，dBaseConnection）;
    cmd.ExecuteNonQuery（）;
}
 

但有一个问题：您的确定的，你要创建的邮编列作为一个小数？不是美国居民，我不是100％的信心这个信息，但是，的根据维基百科 ZIP codeS可以用 0 启动。它们存储为数字数据类型不会让您准确地重新present了。

我的code通过ODBC创建表：

 使用（VAR dBaseConnection =新OdbcConnection（@驱动程序= {微软的dBASE驱动程序（* .DBF）}; DriverID = 277; DBQ = C：用户 RobertWray 文件的dBase;））
{
    dBaseConnection.Open（）;

    字符串STR0 =创建表PERSON2（名称char（50），市CHAR（50），电话CHAR（20））;
    VAR CMD =新的OdbcCommand（STR0，dBaseConnection）;
    cmd.ExecuteNonQuery（）;
}
 

I am trying this to make a select and it works just fine

string str = 
    "SELECT * FROM FREE RIGHT JOIN TestTest ON FREE.DOCNO = TestTest.DOCNO";
DataTable dt = new DataTable();
OdbcDataAdapter da = new OdbcDataAdapter(str, odbconn);
da.Fill(dt);

I am trying this to create a .dbf and i get this OdbcException :

string str0 = "Create Table Persons (Name char(50), City char(50), Phone char(20), Zip decimal(5))";
OdbcCommand cmd = new OdbcCommand(str0, odbconn);
cmd.ExecuteNonQuery();

ERROR [42000] [Microsoft][ODBC dBase Driver] Syntax error in field definition.

Your problem is caused by Zip decimal(5), as the ODBC dBase driver doesn't like it. Off the top of my head, and after a quick google, I couldn't come up with a syntax it would tolerate. It does accept it quite merrily if you use the OleDb provider instead, as follows:

using (var dBaseConnection = new OleDbConnection(
    @"Provider=Microsoft.Jet.OLEDB.4.0; " +
    @" Data Source=C:UsersRobertWrayDocumentsdBase; " +
    @"Extended Properties=dBase IV"))
{
    dBaseConnection.Open();

    string createTableSyntax = 
        "Create Table Person " +
        "(Name char(50), City char(50), Phone char(20), Zip decimal(5))";
    var cmd = new OleDbCommand(createTableSyntax, dBaseConnection);
    cmd.ExecuteNonQuery();
}

One question though: Are you sure that you want to create the Zip column as a decimal? Not being a US resident I'm not 100% confident on this information, but, according to Wikipedia ZIP codes can start with a 0. Storing them as a numeric datatype won't allow you to accurately represent that.

My code for creating the table via ODBC:

using (var dBaseConnection = new OdbcConnection(@"Driver={Microsoft dBASE Driver (*.dbf)};DriverID=277;Dbq=C:UsersRobertWrayDocumentsdBase;"))
{
    dBaseConnection.Open();

    string str0 = "Create Table Person2 (Name char(50), City char(50), Phone char(20))";
    var cmd = new OdbcCommand(str0, dBaseConnection);
    cmd.ExecuteNonQuery();
}