Asp.net按鈕不工作

當我點擊按鈕的信息不會加載到我的表中。Asp.net按鈕不工作

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="frmManageUsers.aspx.cs" Inherits="frmManageUsers" %> 

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 

<html xmlns="http://www.w3.org/1999/xhtml"> 
<head id="Head1" runat="server"> 
    <title>Untitled Page</title> 
</head> 
<body> 
    <form id="form1" runat="server"> 
    <div align="center"> 

     <asp:ImageButton ID="ImageButton1" runat="server" 
      ImageUrl="~/images/CoolBiz_Productions_logo.JPG" PostBackUrl="~/frmMain.aspx" /> 

     <br /> 
     <asp:SqlDataSource ID="SqlDataSource1" runat="server" 
      ConnectionString="<%$ ConnectionStrings:ConnectionString %>" 
      ProviderName="<%$ ConnectionStrings:ConnectionString.ProviderName %>" 


      SelectCommand="SELECT [UserID], [UserName], [UserPassword], [SecurityLevel] FROM [tblUserLogin]"> 
     </asp:SqlDataSource> 

    </div> 
     <div align="center"> 
     <asp:Label ID="Label1" runat="server" Text="Manage Users"></asp:Label> 
    <p> 
     <asp:Label ID="Label2" runat="server" Text="User Name:"></asp:Label> 
     <asp:TextBox ID="txtUserName" runat="server"></asp:TextBox> 
    </p> 
    <p> 
     <asp:Label ID="Label3" runat="server" Text="Password:"></asp:Label> 
     <asp:TextBox ID="txtPassword" runat="server"></asp:TextBox> 
    </p> 
      <p> 
       <asp:Label ID="Label4" runat="server" Text="Security Level:"></asp:Label> 
       <asp:DropDownList ID="drpdwnlstSecurityLevel" runat="server" 
        onselectedindexchanged="drpdwnlstSecurityLevel_SelectedIndexChanged"> 
        <asp:ListItem>A</asp:ListItem> 
        <asp:ListItem>U</asp:ListItem> 
       </asp:DropDownList> 
    </p> 
      <p> 
       <asp:Button ID="btnAddUser" runat="server" Text="Add User" 
        onclick="btnAddUser_Click1" /> 
    </p> 
      <p> 
       <asp:Label ID="lblError" runat="server"></asp:Label> 
    </p> 

     </div> 
    <p> 
     &nbsp;</p> 
       <div align="center"> 
    <asp:GridView ID="tblUserLogin" runat="server" AutoGenerateColumns="False" 
     DataSourceID="SqlDataSource1"> 
     <Columns> 
      <asp:BoundField DataField="UserID" HeaderText="UserID" InsertVisible="False" 
       SortExpression="UserID"></asp:BoundField> 
      <asp:BoundField DataField="UserName" HeaderText="UserName" 
       SortExpression="UserName"></asp:BoundField> 
      <asp:BoundField DataField="UserPassword" HeaderText="UserPassword" 
       SortExpression="UserPassword"></asp:BoundField> 
      <asp:BoundField DataField="SecurityLevel" HeaderText="SecurityLevel" 
       SortExpression="SecurityLevel"></asp:BoundField> 
      <asp:CommandField ShowEditButton="True" /> 
      <asp:CommandField ShowDeleteButton="True" /> 
     </Columns> 
    </asp:GridView> 
    </form> 
    </body> 
</html>

這裏是我的frmManageUsers

public partial class frmManageUsers : System.Web.UI.Page 
{ 
    protected void Page_Load(object sender, EventArgs e) 
    { 
    } 

    protected void btnAddUser_Click1(object sender, EventArgs e) 
    { 
       //string userName, userPassword; 



     if (txtUserName.Text == "" || txtUserName.Text == null) 
     { 
      lblError.Text = ("User Name may not be empty"); 
      lblError.ForeColor = System.Drawing.Color.Red; 
      return; 
     } 
     // else 

      // userName = (txtUserName.Text); 


     if (txtPassword.Text == "" || txtPassword.Text == null) 
     { 
      lblError.Text = ("Password may not be empty"); 
      lblError.ForeColor = System.Drawing.Color.Red; 
      return; 
     } 
     //else 
      // userPassword = (txtPassword.Text); 




     Session["UserName"] = txtUserName.Text; 
     Session["Password"] = txtPassword.Text; 
     Session["SecurityLevel"] = drpdwnlstSecurityLevel.SelectedValue; 
     Server.Transfer("frmManageUsers.aspx"); 



     //Server.Transfer("grdUserLogin"); 

    } 
    protected void drpdwnlstSecurityLevel_SelectedIndexChanged(object sender, EventArgs e) 
    { 

    } 
}

來源

2011-11-29 Mike

雖然'SqlDatSource'足夠聰明，但它不能更新你的數據，而不指定'UpdateCommand'和'UpdateParameters' –

你的SQL數據源綁定到只有你的DataGrid控件的代碼。我沒有看到你的btnAddUser_Click1事件處理程序中的任何調用將記錄插入到數據庫中。您將需要添加這個缺少的邏輯，因爲現有的控件沒有連接到這樣做。你有一個代碼差距。您將需要執行以下內容。這只是一個示例，因爲我將其從我的一個數據訪問層中提取出來並進行了修改以便查看。

string _connectionString = string.Empty; 
     SqlCommand sqlCommand = new SqlCommand(); 
     SqlConnection sqlConnection = new SqlConnection(); 



     ._connectionString = config["connectionString"]; 


     sqlConnection.ConnectionString = "<your connection string>"; 
     sqlCommand.Connection = sqlConnection; 
     sqlCommand.CommandType = CommandType.StoredProcedure; 

    //add your parameters here 
    sqlCommand.Parameters.Add("@ParameterNameWithinProcedure", <your value goes here>); 
    sqlCommand.Parameters.Add("@ParameterNameWithinProcedure", <your value goes here>); 
    sqlCommand.Parameters.Add("@ParameterNameWithinProcedure", <your value goes here>); 
    //Repeat for each parameter in your record. 

    int returnVal = 0; 

     sqlCommand.CommandText = "< insert record stored procedure name" 


     try 
     { 
      sqlConnection.Open(); 
      using (sqlCommand) 
      { 
       returnVal = sqlCommand.ExecuteNonQuery(); 
      } 
     } 
     catch (Exception ex) 
     { 
      //possibly put some logging inforaation here 
     } 
     finally 
     { 
      sqlConnection.Close(); 
     }

PS。在你的if語句，如：

if (txtUserName.Text == "" || txtUserName.Text == null){//....}

嘗試使用

if(String.IsNullOrEmpty(txtUserName.Text)){//...}

這是減少代碼一個漂亮的小方法。

來源

2011-11-29 20:53:00 gsirianni

Asp.net按鈕不工作

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