我已经编写了一个代码来将数据插入到SQL LITE数据库中，如下所示
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
count = 0;
Session["x"] = "session value";
}
}
protected void Button1_Click(object sender, EventArgs e)
{
string path = Server.MapPath("bin/sampldb.db");
SQLiteConnection conn = new SQLiteConnection("Data Source=" + path + "");
try
{
conn.Open();
SQLiteCommand cmd = new SQLiteCommand();
cmd.Connection = conn;
string txt="insert into stu values("+TextBox1.Text +",'"+TextBox2.Text+"')";
cmd.CommandType = CommandType.Text;
cmd.CommandText = txt;
cmd.ExecuteNonQuery();
conn.Close();
}
catch (Exception ex)
{
Label1.Visible = true;
Label1.Text = "Error:" + ex.Message;
}
}
在检索数据时插入后Session我null不知道为什么
protected void Button2_Click(object sender, EventArgs e)
{
if (Session["x"] != null) // Getting Null here
{
Label1.Visible = true;
Label1.Text = Session["x"].ToString();
DataSet m_oDataSet = new DataSet();
string path = Server.MapPath("bin/sampldb.db");
SQLiteConnection conn = new SQLiteConnection("Data Source=" + path + "");
try
{
conn.Open();
SQLiteCommand cmd = new SQLiteCommand();
cmd.Connection = conn;
cmd.CommandType = CommandType.Text;
string txt = "select * from stu";
cmd.CommandText = txt;
SQLiteDataAdapter adp = new SQLiteDataAdapter();
adp.SelectCommand = cmd;
adp.Fill(m_oDataSet);
GridView1.DataSource = m_oDataSet.Tables[0];
GridView1.DataBind();
}
catch (Exception ex)
{
Label1.Visible = true;
Label1.Text = "Error:" + ex.Message;
}
finally
{
conn.Close();
}
}
}
测试时相同的代码Sql server 2008可以正常工作
protected void BtnSqlInsert_Click(object sender, EventArgs e)
{
SqlConnection con = new SqlConnection(cnstr);
con.Open();
SqlCommand cmd = new SqlCommand("Insert into [User] values ('" + TextBox1.Text + "','" + TextBox2.Text + "')", con);
cmd.ExecuteNonQuery();
con.Close();
}
protected void BtnSqlGet_Click(object sender, EventArgs e)
{
if (Session["x"] != null) //Able to get session here
{
Label1.Visible = true;
Label1.Text = Session["x"].ToString();
}
}
我的sql lite路径来自Bin文件夹，如图所示
