我正在通过request.querystring从gridview控件中将数据调用到文本框中。但是，当我编辑值文本框时，不会更新新值。
这是我正在从中调用数据的页面
<td>
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" BackColor="#CCCCCC" BorderColor="#999999" BorderStyle="Solid" BorderWidth="3px" CellPadding="4" CellSpacing="2" DataKeyNames="id" DataSourceID="SqlDataSource1" ForeColor="Black">
<Columns>
<asp:TemplateField HeaderText="id" InsertVisible="False" SortExpression="id">
<EditItemTemplate>
<asp:Label ID="Label1" runat="server" Text='<%# Eval("id") %>'></asp:Label>
</EditItemTemplate>
<ItemTemplate>
<asp:LinkButton ID="LinkButton1" runat="server" OnClick="LinkButton1_Click" Text='<%# Eval("id") %>'></asp:LinkButton>
</ItemTemplate>
</asp:TemplateField>
<asp:BoundField DataField="dealowner" HeaderText="dealowner" SortExpression="dealowner" />
<asp:BoundField DataField="dealname" HeaderText="dealname" SortExpression="dealname" />
<asp:BoundField DataField="accountname" HeaderText="accountname" SortExpression="accountname" />
<asp:BoundField DataField="type" HeaderText="type" SortExpression="type" />
<asp:BoundField DataField="nextstep" HeaderText="nextstep" SortExpression="nextstep" />
<asp:BoundField DataField="leadsource" HeaderText="leadsource" SortExpression="leadsource" />
<asp:BoundField DataField="amount" HeaderText="amount" SortExpression="amount" />
<asp:BoundField DataField="closingdate" HeaderText="closingdate" SortExpression="closingdate" />
<asp:BoundField DataField="stage" HeaderText="stage" SortExpression="stage" />
<asp:BoundField DataField="probability" HeaderText="probability" SortExpression="probability" />
<asp:BoundField DataField="expectedrevenue" HeaderText="expectedrevenue" SortExpression="expectedrevenue" />
<asp:BoundField DataField="campaignsource" HeaderText="campaignsource" SortExpression="campaignsource" />
<asp:BoundField DataField="description" HeaderText="description" SortExpression="description" />
</Columns>
<FooterStyle BackColor="#CCCCCC" />
<HeaderStyle BackColor="Black" Font-Bold="True" ForeColor="White" />
<PagerStyle BackColor="#CCCCCC" ForeColor="Black" HorizontalAlign="Left" />
<RowStyle BackColor="White" />
<SelectedRowStyle BackColor="#000099" Font-Bold="True" ForeColor="White" />
<SortedAscendingCellStyle BackColor="#F1F1F1" />
<SortedAscendingHeaderStyle BackColor="#808080" />
<SortedDescendingCellStyle BackColor="#CAC9C9" />
<SortedDescendingHeaderStyle BackColor="#383838" />
</asp:GridView>
</td>
<td> </td>
</tr>
<tr>
<td>
<asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:staffshawConnectionString %>" DeleteCommand="DELETE FROM [Deals] WHERE [id] = @id" InsertCommand="INSERT INTO [Deals] ([dealowner], [dealname], [accountname], [type], [nextstep], [leadsource], [amount], [closingdate], [stage], [probability], [expectedrevenue], [campaignsource], [description]) VALUES (@dealowner, @dealname, @accountname, @type, @nextstep, @leadsource, @amount, @closingdate, @stage, @probability, @expectedrevenue, @campaignsource, @description)" SelectCommand="SELECT * FROM [Deals]" UpdateCommand="UPDATE [Deals] SET [dealowner] = @dealowner, [dealname] = @dealname, [accountname] = @accountname, [type] = @type, [nextstep] = @nextstep, [leadsource] = @leadsource, [amount] = @amount, [closingdate] = @closingdate, [stage] = @stage, [probability] = @probability, [expectedrevenue] = @expectedrevenue, [campaignsource] = @campaignsource, [description] = @description WHERE [id] = @id">
<DeleteParameters>
<asp:Parameter Name="id" Type="Int32" />
</DeleteParameters>
<InsertParameters>
<asp:Parameter Name="dealowner" Type="String" />
<asp:Parameter Name="dealname" Type="String" />
<asp:Parameter Name="accountname" Type="String" />
<asp:Parameter Name="type" Type="String" />
<asp:Parameter Name="nextstep" Type="String" />
<asp:Parameter Name="leadsource" Type="String" />
<asp:Parameter Name="amount" Type="String" />
<asp:Parameter Name="closingdate" Type="String" />
<asp:Parameter Name="stage" Type="String" />
<asp:Parameter Name="probability" Type="String" />
<asp:Parameter Name="expectedrevenue" Type="String" />
<asp:Parameter Name="campaignsource" Type="String" />
<asp:Parameter Name="description" Type="String" />
</InsertParameters>
<UpdateParameters>
<asp:Parameter Name="dealowner" Type="String" />
<asp:Parameter Name="dealname" Type="String" />
<asp:Parameter Name="accountname" Type="String" />
<asp:Parameter Name="type" Type="String" />
<asp:Parameter Name="nextstep" Type="String" />
<asp:Parameter Name="leadsource" Type="String" />
<asp:Parameter Name="amount" Type="String" />
<asp:Parameter Name="closingdate" Type="String" />
<asp:Parameter Name="stage" Type="String" />
<asp:Parameter Name="probability" Type="String" />
<asp:Parameter Name="expectedrevenue" Type="String" />
<asp:Parameter Name="campaignsource" Type="String" />
<asp:Parameter Name="description" Type="String" />
<asp:Parameter Name="id" Type="Int32" />
</UpdateParameters>
</asp:SqlDataSource>
这是我正在呼叫的页面：
<form id="form1" runat="server">
<div>
<table class="auto-style1">
<tr>
<td class="auto-style5"><strong>Deal Information</strong></td>
<td class="auto-style5">
<asp:TextBox ID="ID" runat="server"></asp:TextBox>
</td>
<td class="auto-style5"></td>
<td class="auto-style5"></td>
</tr>
<tr>
<td class="auto-style4">
<asp:Label ID="Label1" runat="server" Text="Deal Owner"></asp:Label>
</td>
<td class="auto-style4">
<asp:TextBox ID="dealowner" runat="server"></asp:TextBox>
</td>
<td class="auto-style4">
<asp:Label ID="Label9" runat="server" Text="Amount"></asp:Label>
</td>
<td class="auto-style4">
<asp:TextBox ID="amount" runat="server"></asp:TextBox>
</td>
</tr>
<tr>
<td class="auto-style2">
<asp:Label ID="Label2" runat="server" Text="Deal Name"></asp:Label>
</td>
<td class="auto-style2">
<asp:TextBox ID="dealname" runat="server"></asp:TextBox>
</td>
<td class="auto-style2">
<asp:Label ID="Label10" runat="server" Text="Closing Date"></asp:Label>
</td>
<td class="auto-style2">
<asp:TextBox ID="closingdate" runat="server"></asp:TextBox>
</td>
</tr>
<tr>
<td class="auto-style4">
<asp:Label ID="Label3" runat="server" Text="Account Name"></asp:Label>
</td>
<td class="auto-style4">
<asp:TextBox ID="accountname" runat="server"></asp:TextBox>
</td>
<td class="auto-style4">
<asp:Label ID="Label11" runat="server" Text="Stage"></asp:Label>
</td>
<td class="auto-style4">
<asp:DropDownList ID="stage" runat="server">
<asp:ListItem>-None-</asp:ListItem>
<asp:ListItem>Qualification</asp:ListItem>
<asp:ListItem>Needs Analysis</asp:ListItem>
<asp:ListItem>Value Proposition</asp:ListItem>
<asp:ListItem>Identity Decision Makers</asp:ListItem>
<asp:ListItem>Proposal/Price Quote</asp:ListItem>
<asp:ListItem>Negotiation/Review</asp:ListItem>
<asp:ListItem>Closed Won</asp:ListItem>
<asp:ListItem>Closed Lost</asp:ListItem>
<asp:ListItem>Closed-Lost to Competition</asp:ListItem>
</asp:DropDownList>
</td>
</tr>
<tr>
<td class="auto-style4">
<asp:Label ID="Label4" runat="server" Text="Type"></asp:Label>
</td>
<td class="auto-style4">
<asp:DropDownList ID="type" runat="server">
<asp:ListItem>-None-</asp:ListItem>
<asp:ListItem>Existing Business</asp:ListItem>
<asp:ListItem>New Businees</asp:ListItem>
</asp:DropDownList>
</td>
<td class="auto-style4">
<asp:Label ID="Label12" runat="server" Text="Probability (%)"></asp:Label>
</td>
<td class="auto-style4">
<asp:TextBox ID="probability" runat="server"></asp:TextBox>
</td>
</tr>
<tr>
<td class="auto-style2">
<asp:Label ID="Label5" runat="server" Text="Next Step"></asp:Label>
</td>
<td class="auto-style2">
<asp:TextBox ID="nextstep" runat="server"></asp:TextBox>
</td>
<td class="auto-style2">
<asp:Label ID="Label13" runat="server" Text="Expected Revenue"></asp:Label>
</td>
<td class="auto-style2">
<asp:TextBox ID="expectedrevenue" runat="server"></asp:TextBox>
</td>
</tr>
<tr>
<td class="auto-style2">
<asp:Label ID="Label6" runat="server" Text="Lead Source"></asp:Label>
</td>
<td class="auto-style2">
<asp:DropDownList ID="leadsource" runat="server">
<asp:ListItem>-None-</asp:ListItem>
<asp:ListItem>Advertisment</asp:ListItem>
<asp:ListItem>Cold Call</asp:ListItem>
<asp:ListItem>Employee Referral</asp:ListItem>
<asp:ListItem>External Referral</asp:ListItem>
<asp:ListItem>Online Store</asp:ListItem>
<asp:ListItem>Partner</asp:ListItem>
<asp:ListItem>Public Relations</asp:ListItem>
<asp:ListItem>Sales Email Alias</asp:ListItem>
<asp:ListItem>Seminar Partner</asp:ListItem>
<asp:ListItem>Internal Seminar</asp:ListItem>
<asp:ListItem>Trade Show</asp:ListItem>
<asp:ListItem>Web Download</asp:ListItem>
<asp:ListItem>Web Research</asp:ListItem>
<asp:ListItem>Chat</asp:ListItem>
</asp:DropDownList>
</td>
<td class="auto-style2">
<asp:Label ID="Label14" runat="server" Text="Campaign Source"></asp:Label>
</td>
<td class="auto-style2">
<asp:TextBox ID="campaignsource" runat="server"></asp:TextBox>
</td>
</tr>
<tr>
<td class="auto-style4">
<asp:Label ID="Label7" runat="server" Text="Contact Name"></asp:Label>
</td>
<td class="auto-style4">
<asp:TextBox ID="contactname" runat="server"></asp:TextBox>
</td>
<td class="auto-style4"></td>
<td class="auto-style4"></td>
</tr>
<tr>
<td class="auto-style3">Description Information</td>
<td class="auto-style3"></td>
<td class="auto-style3"></td>
<td class="auto-style3"></td>
</tr>
<tr>
<td class="auto-style2">
<asp:Label ID="Label8" runat="server" Text="Description"></asp:Label>
</td>
<td class="auto-style2">
<asp:TextBox ID="Description" runat="server"></asp:TextBox>
</td>
<td class="auto-style2">
<asp:Label ID="Label15" runat="server"></asp:Label>
</td>
<td class="auto-style2"></td>
</tr>
<tr>
<td>
<asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="Edit" />
数据来自的页面：
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Button1_Click(object sender, EventArgs e)
{
Response.Redirect("Deals.aspx");
}
protected void LinkButton1_Click(object sender, EventArgs e)
{
Response.Redirect("EditDeals.aspx?id=" + ((LinkButton)sender).Text);
}
}
}
这是将在其中编辑数据的页面：
SqlConnection conn = new SqlConnection(ConfigurationManager.ConnectionStrings["staffshawConnectionString"].ConnectionString);
protected void Page_Load(object sender, EventArgs e)
{
string data = Request.QueryString["id"];
conn.Open();
SqlCommand cmd = conn.CreateCommand();
cmd.CommandType = CommandType.Text;
cmd.CommandText = "Select * from Deals where id = '" + data + "'";
cmd.ExecuteNonQuery();
DataTable dt = new DataTable();
SqlDataAdapter da = new SqlDataAdapter(cmd);
da.Fill(dt);
using (SqlDataReader rdr = cmd.ExecuteReader())
{
while (rdr.Read())
{
ID.Text = rdr["id"].ToString();
dealowner.Text = rdr["dealowner"].ToString();
accountname.Text = rdr["accountname"].ToString();
type.Text = rdr["type"].ToString();
nextstep.Text = rdr["nextstep"].ToString();
leadsource.Text = rdr["leadsource"].ToString();
amount.Text = rdr["amount"].ToString();
closingdate.Text = rdr["closingdate"].ToString();
stage.Text = rdr["stage"].ToString();
probability.Text = rdr["probability"].ToString();
expectedrevenue.Text = rdr["expectedrevenue"].ToString();
campaignsource.Text = rdr["campaignsource"].ToString();
Description.Text = rdr["description"].ToString();
dealname.Text = rdr["dealname"].ToString();
}
}
conn.Close();
}
protected void Button1_Click(object sender, EventArgs e)
{
try
{
conn.Open();
SqlCommand cmd = new SqlCommand("Update Deals set dealowner='"+dealowner.Text+ "',dealname='" + dealname.Text + "',accountname='" + accountname.Text + "',type='" + type.Text + "',nextstep='" + nextstep.Text + "',leadsource='" + leadsource.Text + "',amount='" + amount.Text + "',closingdate='" + closingdate.Text + "',stage='" + stage.Text + "',probability='" + probability.Text + "',expectedrevenue='" + expectedrevenue.Text + "',campaignsource='" + campaignsource.Text + "',description='" + Description.Text + "' where id ="+ID.Text+";", conn);
// SqlCommand cmd = new SqlCommand("Update [pessenger_details]set pnr='" + pnr.Text + "', t_no='" + t_no.Text + "', name='" + name.Text + "', type='" + type.Text + "' where id= '" + id.Text + "'", con);
cmd.ExecuteNonQuery();
conn.Close();
Label1.Text = "Edit Successfully";
Response.Redirect("AllDeals.aspx");
}
catch (Exception Ex)
{
Response.Write(Ex);
}
}
}
}
我成功将数据检索到另一个Web表单，但是无法对其进行编辑。
答案 0 :(得分：0)
您可能只需要在某处添加if（！Page.IsPostBack）。
单击按钮时，首先会重新加载页面，然后触发事件，最后会重新加载数据。
See this link about Page Life Cycle
仅尝试在第一个Page_load加载，而不是在每次回发时加载。
正如所说的那样，对于sql语句，除非您完全掌握了该字符串中要包含的数据（即使您认为自己有做...），否则字符串连接不是很好。
您应该考虑使用PreparedStatement