下面的代码只是从数据库中获取数据并将数据填充到 asp.net 页面上的 TextBoxes 中,当我单击按钮 btnSave 时,TextBoxes 上的任何更改都会反映到数据库中。但是当我单击 btnSave 按钮时,我从文本框获得的值是 Page_Load 事件的初始值,而不是在我更改文本框上的值之后的值
public partial class Settings : System.Web.UI.Page
{
string conString = System.Configuration.ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString;
protected void Page_Load(object sender, EventArgs e)
{
SqlConnection con = new SqlConnection(conString);
con.Open();
SqlCommand cmd = new SqlCommand("SELECT CompanyAUserName, CompanyAPassword, CompanyAEmail, CompanyBUserName, CompanyBPassword, AgentAName, AgentBName, ItemShortageNotification FROM COMPANY_SETTINGS", con);
SqlDataReader dr = cmd.ExecuteReader();
while (dr.Read())
{
txtHostName.Text = dr["CompanyAUserName"].ToString();
txtHostPassword.Text = dr["CompanyAPassword"].ToString();
txtHostEmail.Text = dr["CompanyAEmail"].ToString();
txtClientName.Text = dr["CompanyBUserName"].ToString();
txtClientPassword.Text = dr["CompanyBPassword"].ToString();
txtAgentAName.Text = dr["AgentAName"].ToString();
txtAgentBName.Text = dr["AgentBName"].ToString();
txtItemQty.Text = dr["ItemShortageNotification"].ToString();
}
con.Close();
}
protected void btnSave_Click(object sender, EventArgs e)
{
SqlConnection con = new SqlConnection(conString);
con.Open();
SqlCommand cmd = new SqlCommand();
cmd.Connection = con;
try
{
cmd.CommandText =
"UPDATE COMPANY_SETTINGS SET CompanyAUserName = @CompanyAUserName, CompanyAPassword = @CompanyAPassword, CompanyAEmail = @CompanyAEmail, CompanyBUserName = @CompanyBUserName, CompanyBPassword = @CompanyBPassword, AgentAName = @AgentAName, AgentBName = @AgentBName, ItemShortageNotification = @ItemShortageNotification";
cmd.Parameters.AddWithValue("@CompanyAUserName", txtHostName.Text);
cmd.Parameters.AddWithValue("@CompanyAPassword", txtHostPassword.Text);
cmd.Parameters.AddWithValue("@CompanyAEmail", txtHostEmail.Text);
cmd.Parameters.AddWithValue("@CompanyBUserName", txtClientName.Text);
cmd.Parameters.AddWithValue("@CompanyBPassword", txtClientPassword.Text);
cmd.Parameters.AddWithValue("@AgentAName", txtAgentAName.Text);
cmd.Parameters.AddWithValue("@AgentBName", txtAgentBName.Text);
cmd.Parameters.AddWithValue("@ItemShortageNotification", txtItemQty.Text.Trim());
cmd.ExecuteNonQuery();
Response.Redirect("~/Settings.aspx");
}
catch (Exception ex)
{
Response.Write("<script>alert('Error: " + ex.Message + "')</script>");
}
con.Close();
}
}
这是来自 .aspx 页面的部分代码
<asp:Content ID="Content3" ContentPlaceHolderID="ContentPlaceHolderBody" Runat="Server">
<div style="height:100%;" runat="server" id="divSettings">
<h3 style="padding:0; margin:0">Settings</h3>
<h5 style="padding: 5px">(This page is only visible to the host)</h5>
<table class="SignUpTable" runat="server">
<tr runat="server">
<td align="center" colspan="2" runat="server">
<h1>Company A Information</h1>
<p>This is host account infromation. </p>
</td>
</tr>
<tr runat="server">
<td class="label" runat="server" >
<asp:Label ID="UserNameLabel" runat="server" AssociatedControlID="UserNameLabel">User Name: </asp:Label><br />
<div class="small"> Minimun of 4 characters </div>
</td>
<td runat="server">
<asp:TextBox ID="txtHostName" runat="server" CssClass="textBox"></asp:TextBox><br />
<asp:RequiredFieldValidator ID="UserNameRequired" runat="server"
ControlToValidate="txtHostName" Text="Host name is required."
ToolTip="Enter Host Name" Display="Dynamic"
ValidationGroup="ValidationSettings" SetFocusOnError="True"/>
<asp:RegularExpressionValidator ID="RegularExpressionValidator1" SetFocusOnError="True"
runat="server" ControlToValidate="txtHostName" Display="Dynamic"
ValidationExpression="[0-9a-zA-Z]{4,}" ValidationGroup="ValidationSettings">Host name must be more than 4 characters.</asp:RegularExpressionValidator>
</td>
</tr>
我尝试使用 FindControl() 并且仍然获得相同的值。请告诉我知道我错过了什么。谢谢你。