asp.net使用GridView删除更新ACCESS数据库里的数据问题!急!!!
一个网站先前用的是MS-SQL现在更换数据库 为ACCESS

一个GridView里面有更新删除 因为语法有点不一样去做了修改 删除修改好了没什么问题..但是更新怎么也不行..老提示 "语法错误 (操作符丢失) 在查询表达式 'where id= "

就是那一堆单引号,和双银号闹的..大家帮我看看..谢谢啦!

数据库 字段
id txt date
------------------------
自动编号 备注 time
代码:
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;
using System.Data.OleDb;

public partial class Admin_ad_jj : System.Web.UI.Page
{
OleDbConnection con = new OleDbConnection( "PROVIDER=Microsoft.Jet.OLEDB.4.0;DATA Source= " + " C:/Documents and Settings/AndersoN/桌面/xf/database/xf.mdb ");
protected void Page_Load(object sender, EventArgs e)
{

}
protected void LinkButton2_Click(object sender, EventArgs e)
{
this.TextBox1.Text = " ";
}
protected void LinkButton1_Click(object sender, EventArgs e)
{

con.Open();
string ad_news = "insert into jj (txt)values( ' " + this.TextBox1.Text + " ') ";
OleDbCommand com = new OleDbCommand(ad_news, con);
com.ExecuteNonQuery();
con.Close();
bind();
}
protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
{
con.Open();
string sqlstr = "update jj set txt= "+((TextBox)(GridView1.Rows[e.RowIndex].Cells[0].Controls[0])).Text.ToString().Trim()+ "where id= "+Convert.ToInt32(GridView1.DataKeys[e.RowIndex].Value.ToString())+ " ";

OleDbCommand sqlcom = new OleDbCommand(sqlstr, con);
sqlcom.ExecuteNonQuery();
con.Close();
GridView1.EditIndex = -1;

bind();
}
protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
{
GridView1.EditIndex = e.NewEditIndex;
bind();
}
protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
con.Open();
string sqlstr = "delete from jj where id= " + Convert.ToInt32(GridView1.DataKeys[e.RowIndex].Value.ToString()) + " ";
OleDbCommand com = new OleDbCommand(sqlstr, con );
com.ExecuteNonQuery();
con.Close();
bind();
}
protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
{
GridView1.EditIndex = -1;
bind();
}
public void bind()
{
string sqlstr = "select * from jj ";
OleDbCommand myda = new OleDbCommand(sqlstr, con);
con.Open();
this.GridView1.DataSource = myda.ExecuteReader();
GridView1.DataKeyNames = new string[] { "id " };
GridView1.DataBind();
con.Close();
}
}


[解决办法]
在写where条件的时候，在前边加个空格，“　where id=”