为什么在ModalPopUp中选择的值不会在GridView中反映出来? [英] Why the selected value in the ModalPopUp is not reflected and shown in the GridView?
问题描述
我是ASP.NET的新开发人员，并且正在为我的公司开发一个基于Web的建议框程序，员工可以在其中提交他们所拥有的任何安全建议.现在，我正在研究此系统的管理"部分.
管理员将能够看到GridView控件中列出的所有建议.在GridView的最后一列中，状态将在此处列出.当管理员单击这些建议之一的状态时，将出现一个新的弹出窗口(asp.net ajax ModalPopUpExtender)，其中列出了所有可能的状态，例如:已执行，已批准...等.选择这些状态之一，建议的状态将在数据库中更新. ***我写了代码，但仍然没有更新建议的状态，***
**那么您能帮我修改它吗?**
仅供参考，我具有以下数据库设计:
I am a new ASP.NET developer and I am developing a web-based suggestions box program for my company where the employees can submit any safety suggestions they have. Now, I am working on the Administration part of this system.
The Admin will be able to see all suggestions listed in a GridView control. In the last column of the GridView, the status will be listed there. When the Admin clicks on the status of one of these suggestion, a new pop-up window (asp.net ajax ModalPopUpExtender) will be appeared with listing all the possible status such as: actioned, approved... etc. And when the Admin selects one of these status, the status of the suggestion will be updated in the database. ***I wrote the code but still it doesn''t update the status of the suggestion,***
**so could you please help me in modifying it?**
FYI, I have the following database design:
Employee Table: Username, Name...
SafetySuggestionsLog: ID, Title, Description, Username, StatusID
SafetySuggestionsStatus: ID, Status
** ASP.NET代码:**
**ASP.NET code:**
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<asp:GridView ID="GridView1" runat="server" AllowPaging="True"
AllowSorting="True" AutoGenerateColumns="False" DataKeyNames="ID"
width="900px" CssClass="mGrid"
DataSourceID="SqlDataSource1"
OnRowDataBound="GridView1_RowDataBound">
<AlternatingRowStyle BackColor="White" ForeColor="#284775" CssClass="alt" />
<HeaderStyle Font-Bold = "True" ForeColor="Black" Height="20px"/>
<Columns>
<asp:BoundField DataField="ID" HeaderText="ID" InsertVisible="False"
ReadOnly="True" SortExpression="ID" />
<asp:BoundField DataField="Title" HeaderText="Title" SortExpression="Title" />
<asp:BoundField DataField="Description" HeaderText="Description"
SortExpression="Description" />
<asp:BoundField DataField="Name" HeaderText="Name" SortExpression="Name" />
<asp:BoundField DataField="Username" HeaderText="Username"
SortExpression="Username" />
<asp:BoundField DataField="DivisionShortcut" HeaderText="DivisionShortcut"
SortExpression="DivisionShortcut" />
<asp:BoundField DataField="Type" HeaderText="Type" SortExpression="Type" />
<%-- This to make status be opened and edited through the Ajax ModalPopUp Window --%>
<asp:TemplateField HeaderText="Status">
<ItemTemplate>
<asp:LinkButton runat="server" ID="lnkSuggestionStatus" Text=''<%#Eval("Status")%>''
OnClick="lnkSuggestionStatus_Click">
</asp:LinkButton>
</ItemTemplate>
</asp:TemplateField>
<%--<asp:HyperLinkField HeaderText="Status"
SortExpression="Status" />--%>
</Columns>
<RowStyle HorizontalAlign="Center" />
</asp:GridView>
<asp:Button runat="server" ID="btnModalPopUp" style="display:none" />
<AjaxToolkit:ModalPopUpExtender ID="modalPopUpExtender1"
runat="server"
TargetControlID="btnModalPopUp"
PopupControlID="pnlPopUp"
BackgroundCssClass="popUpStyle"
PopupDragHandleControlID="panelDragHandle"
OkControlID="OKButton">
</AjaxToolkit:ModalPopUpExtender>
<asp:Panel runat="server" ID="pnlPopUp">
<asp:RadioButtonList ID="StatusList" runat="server" RepeatColumns="1" RepeatDirection="Vertical"
RepeatLayout="Table" TextAlign="Left" DataSourceID="SuggestionStatusDataSource"
DataTextField="Status" DataValueField="ID">
<asp:ListItem id="option1" runat="server" Value="ACTIONED" />
<asp:ListItem id="option2" runat="server" Value="APPROVED" />
<asp:ListItem id="option3" runat="server" Value="PENDING" />
<asp:ListItem id="option4" runat="server" Value="TRANSFERRED" />
</asp:RadioButtonList>
<asp:SqlDataSource ID="SuggestionStatusDataSource" runat="server"
ConnectionString="<%$ ConnectionStrings:testConnectionString %>"
SelectCommand="SELECT * FROM [SafetySuggestionsStatus]"></asp:SqlDataSource>
<asp:Button ID="confirmButton" runat="server" Text="Confirm"
OnClientClick="javascript:return confirm(''Are you sure you want to send an email notification about the safety suggestion to the owner?'')"
OnClick="btnSendStatus_Click" />
<asp:Button ID="OKButton" runat="server" Text="Close" />
</asp:Panel>
</ContentTemplate>
</asp:UpdatePanel>
**隐藏代码:**
**Code-Behind:**
protected void lnkSuggestionStatus_Click(object sender, EventArgs e)
{
LinkButton lnkSuggestionStatus = sender as LinkButton;
//var safetySuggestionsId =
//get reference to the row selected
GridViewRow gvrow = (GridViewRow)lnkSuggestionStatus.NamingContainer;
//set the selected index to the selected row so that the selected row will be highlighted
GridView1.SelectedIndex = gvrow.RowIndex;
//This HiddenField used to store the value of the ID
HiddenField1.Value = gvrow.RowIndex.ToString();
//show the modalPopUp
modalPopUpExtender1.Show();
}
public void btnSendStatus_Click(object sender, EventArgs e) {
var statusID = StatusList.SelectedValue;
string connString = "Data Source=localhost\\sqlexpress;Initial Catalog=psspdbTest;Integrated Security=True";
//For updating the status of the safety suggestion
string updateCommand = "UPDATE SafetySuggestionsLog SET StatusID= @statusID where ID=@SafetySuggestionsID";
using (SqlConnection conn = new SqlConnection(connString))
{
conn.Open();
using (SqlCommand cmd = new SqlCommand(updateCommand, conn))
{
cmd.Parameters.AddWithValue("@statusID", Convert.ToInt32(statusID));
cmd.Parameters.AddWithValue("@SafetySuggestionsID", Convert.ToInt32(HiddenField1.Value));
cmd.ExecuteNonQuery();
}
//reset the value of hiddenfield
HiddenField1.Value = "-1";
}
GridView1.DataBind();
//SendSuggestionStatusToUser(statusID);
}
**我没有收到任何错误，但是ModalPopUp窗口中的选定状态没有反映回GridView.为什么?**
**I did not get any error, but the selected status in the ModalPopUp window is not reflected back to the GridView. Why?**
推荐答案
ConnectionStrings:testConnectionString％> SelectCommand ="SELECT * FROM [SafetySuggestionsStatus]"></asp:SqlDataSource> < asp:Button ID ="confirmButton" runat =服务器" Text =确认" OnClientClick ="javascript:return Confirm(``您确定要向所有者发送有关安全建议的电子邮件通知吗?") OnClick ="btnSendStatus_Click"/> < asp:Button ID ="OKButton" runat =服务器" Text =关闭"/> </asp:Panel> </ContentTemplate> </asp:UpdatePanel>
ConnectionStrings:testConnectionString %>" SelectCommand="SELECT * FROM [SafetySuggestionsStatus]"></asp:SqlDataSource> <asp:Button ID="confirmButton" runat="server" Text="Confirm" OnClientClick="javascript:return confirm(''Are you sure you want to send an email notification about the safety suggestion to the owner?'')" OnClick="btnSendStatus_Click" /> <asp:Button ID="OKButton" runat="server" Text="Close" /> </asp:Panel> </ContentTemplate> </asp:UpdatePanel>
**隐藏代码:**
**Code-Behind:**
protected void lnkSuggestionStatus_Click(object sender, EventArgs e)
{
LinkButton lnkSuggestionStatus = sender as LinkButton;
//var safetySuggestionsId =
//get reference to the row selected
GridViewRow gvrow = (GridViewRow)lnkSuggestionStatus.NamingContainer;
//set the selected index to the selected row so that the selected row will be highlighted
GridView1.SelectedIndex = gvrow.RowIndex;
//This HiddenField used to store the value of the ID
HiddenField1.Value = gvrow.RowIndex.ToString();
//show the modalPopUp
modalPopUpExtender1.Show();
}
public void btnSendStatus_Click(object sender, EventArgs e) {
var statusID = StatusList.SelectedValue;
string connString = "Data Source=localhost\\sqlexpress;Initial Catalog=psspdbTest;Integrated Security=True";
//For updating the status of the safety suggestion
string updateCommand = "UPDATE SafetySuggestionsLog SET StatusID= @statusID where ID=@SafetySuggestionsID";
using (SqlConnection conn = new SqlConnection(connString))
{
conn.Open();
using (SqlCommand cmd = new SqlCommand(updateCommand, conn))
{
cmd.Parameters.AddWithValue("@statusID", Convert.ToInt32(statusID));
cmd.Parameters.AddWithValue("@SafetySuggestionsID", Convert.ToInt32(HiddenField1.Value));
cmd.ExecuteNonQuery();
}
//reset the value of hiddenfield
HiddenField1.Value = "-1";
}
GridView1.DataBind();
//SendSuggestionStatusToUser(statusID);
}
**我没有收到任何错误，但是ModalPopUp窗口中的选定状态没有反映回GridView.为什么?**
**I did not get any error, but the selected status in the ModalPopUp window is not reflected back to the GridView. Why?**
//This HiddenField used to store the value of the ID
HiddenField1.Value = gvrow.RowIndex.ToString();
在上方您指定行索引，而不是数据键(ID值)，请在下面尝试
above you assign row index, not the data key(ID value), try below
HiddenField1.Value = GridView1.DataKeys[gvrow.RowIndex].Value.ToString();
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