.NET連接Oracle數據庫（對數據的增刪改查）
--------------------------WebForm1.aspx-----------------------------------------------------
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server"><title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:Button ID="btnAdd" runat="server" Text="添加" οnclick="btnAdd_Click" />
<asp:Button ID="btnSava" runat="server" Text="保存編輯"
οnclick="btnSava_Click" />
<br />
Id:<asp:TextBox ID="txtId" runat="server"></asp:TextBox>
<br />
UserName:<asp:TextBox ID="txtUsername" runat="server"></asp:TextBox>
<br />
Password:<asp:TextBox ID="txtPassword" runat="server"></asp:TextBox>
<br />
<br />
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False">
<Columns>
<asp:BoundField DataField="Id" HeaderText="編號" />
<asp:BoundField DataField="UserName" HeaderText="用戶名" />
<asp:BoundField DataField="Password" HeaderText="密碼" />
<asp:TemplateField HeaderText="操作">
<ItemTemplate>
<asp:LinkButton ID="btnEdit" CommandArgument='<%#Eval("Id") %>' runat="server"
οnclick="btnEdit_Click">編輯</asp:LinkButton>
<asp:LinkButton ID="btnDelete" CommandArgument='<%#Eval("Id") %>'
OnClientClick="return confirm('您確認刪除該記錄嗎?');" runat="server"
οnclick="btnDelete_Click">刪除</asp:LinkButton>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
</div>
</form>
</body>
</html>
--------------------------WebForm1.aspx.cs-----------------------------------------------------
namespace 連接Oracle數據庫
{
public partial class WebForm1 : System.Web.UI.Page
{
string oracleconstr = ConfigurationManager.ConnectionStrings["oraclecon"].ConnectionString;
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
LoadData();
}
}
private void LoadData()
{
OracleConnection conn = new OracleConnection(oracleconstr);
OracleCommand cmd = conn.CreateCommand();
conn.Open();
cmd.CommandText = "select * from T_Users order by Id desc";
OracleDataAdapter adapter = new OracleDataAdapter(cmd);
DataTable dt = new DataTable();
adapter.Fill(dt);
cmd.Dispose();
conn.Dispose();
GridView1.DataSource = dt;
GridView1.DataBind();
}
protected void btnAdd_Click(object sender, EventArgs e)
{
txtId.Attributes.Add("readonly", "false");
OracleConnection conn = new OracleConnection(oracleconstr);
OracleCommand cmd = conn.CreateCommand();
conn.Open();
cmd.CommandText = "insert into T_Users(Id,UserName,Password) values(:id,:username,:password)";
cmd.Parameters.AddWithValue(":id", txtId.Text);
cmd.Parameters.AddWithValue(":username", txtUsername.Text);
cmd.Parameters.AddWithValue(":password", txtPassword.Text);
if (cmd.ExecuteNonQuery() > 0)
{
Response.Write("添加成功！");
}
else
{
Response.Write("添加失敗！");
}
cmd.Dispose();
conn.Dispose();
}
protected void btnEdit_Click(object sender, EventArgs e)
{
txtId.Attributes.Add("readonly", "true"); //txtId文本框設置爲只讀
LinkButton btnEdit = sender as LinkButton;
OracleConnection conn = new OracleConnection(oracleconstr);
OracleCommand cmd = conn.CreateCommand();
conn.Open();
cmd.CommandText = "select * from T_Users where Id=:id";
cmd.Parameters.AddWithValue(":id", btnEdit.CommandArgument);
OracleDataAdapter adapter = new OracleDataAdapter(cmd);
DataTable dt = new DataTable();
adapter.Fill(dt);
txtId.Text=dt.Rows[0]["Id"].ToString();
txtUsername.Text = dt.Rows[0]["UserName"].ToString();
txtPassword.Text = dt.Rows[0]["Password"].ToString();
cmd.Dispose();
conn.Dispose();
}
protected void btnDelete_Click(object sender, EventArgs e)
{
LinkButton btnEdit = sender as LinkButton;
OracleConnection conn = new OracleConnection(oracleconstr);
OracleCommand cmd = conn.CreateCommand();
conn.Open();
cmd.CommandText = "delete from T_Users where Id=:id";
cmd.Parameters.AddWithValue(":id", btnEdit.CommandArgument);
if (cmd.ExecuteNonQuery() > 0)
{
Response.Write("刪除成功！");
}
else
{
Response.Write("刪除失敗！");
}
cmd.Dispose();
conn.Dispose();
LoadData();
}
protected void btnSava_Click(object sender, EventArgs e)
{
OracleConnection conn = new OracleConnection(oracleconstr);
OracleCommand cmd = conn.CreateCommand();
conn.Open();
cmd.CommandText = "update T_Users set UserName=:username,Password=:Password where Id=:id";
cmd.Parameters.AddWithValue(":username",txtUsername.Text);
cmd.Parameters.AddWithValue(":Password", txtPassword.Text);
cmd.Parameters.AddWithValue(":id",txtId.Text);
if (cmd.ExecuteNonQuery() > 0)
{
Response.Write("保存成功！");
}
else
{
Response.Write("保存失敗");
}
cmd.Dispose();
conn.Dispose();
LoadData();
}
}
}
----------------------------------------Web.config----------------------------------------------------------------
<connectionStrings>
<add name ="oraclecon" connectionString="Data Source=orcl;Persist Security Info=True;User ID=lyi;Password=Liuyiyi11;Unicode=True"
providerName="System.Data.OracleClient"/>
</connectionStrings>