Question

我试图在第二列中单击链接按钮时获得第一列标签中的值，所以我添加了onselectedindexchanged函数并向其中添加了一些代码，但根本没有触发，我尝试了多种方法并可以正常工作，但什么也没发生

  <asp:GridView ID="ProjectGridView" runat="server" ShowHeaderWhenEmpty="true" OnSelectedIndexChanged="ProjectGridView_SelectedIndexChanged" AutoGenerateColumns="False" Visible="true" CellPadding="4" ForeColor="#333333" GridLines="None" ShowFooter="true">
                        <AlternatingRowStyle BackColor="White" Height="20px" />
                        <RowStyle Height="20px" />
                        <Columns>
                            <asp:TemplateField Visible="false">
                                <ItemTemplate>
                                    <asp:Label Visible="false" ID="lblProjectID" runat="server" Text=' <%# Eval("Project_ID") %>'></asp:Label>
                                </ItemTemplate>
                            </asp:TemplateField>
                            <asp:TemplateField HeaderText="Project Number">
                                <ItemTemplate>
                                    <asp:LinkButton ID="LinkProjectNumber" runat="server" Text=' <%# Eval("Project_Number") %>'></asp:LinkButton>
                                </ItemTemplate>
                                <FooterTemplate>
                                    <asp:TextBox ID="ProjectNumberTextBox" runat="server" />
                                </FooterTemplate>
                            </asp:TemplateField>
                            <asp:TemplateField HeaderText="Project Name">
                                <ItemTemplate>
                                    <%# Eval("Project_Name") %>
                                </ItemTemplate>
                                <FooterTemplate>
                                    <asp:TextBox ID="ProjectNameTextBox" runat="server" />
                                </FooterTemplate>
                            </asp:TemplateField>
                            <asp:TemplateField HeaderText="Location">
                                <ItemTemplate>
                                    <%# Eval("Project_Location") %>
                                </ItemTemplate>
                                <FooterTemplate>
                                    <asp:TextBox ID="ProjectLocationTextBox" runat="server"></asp:TextBox>
                                </FooterTemplate>
                            </asp:TemplateField>
                            <asp:TemplateField HeaderText="Description">
                                <ItemTemplate>
                                    <%# Eval("Project_Description") %>
                                </ItemTemplate>
                                <FooterTemplate>
                                    <asp:TextBox ID="ProjectDescriptionTextBox" runat="server"></asp:TextBox>
                                </FooterTemplate>
                            </asp:TemplateField>
                            <asp:TemplateField>
                                <FooterTemplate>
                                    <asp:Button ID="btnAdd" runat="server" Text="Add" OnClick="Add" CommandName="Footer" />
                                </FooterTemplate>
                            </asp:TemplateField>
                        </Columns>
                        <FooterStyle BackColor="#507CD1" HorizontalAlign="Center" Font-Bold="True" ForeColor="White" />
                        <HeaderStyle BackColor="#2784FC" Font-Bold="True" ForeColor="White" />
                        <PagerStyle BackColor="#2461BF" ForeColor="White" HorizontalAlign="Center" />
                        <RowStyle BackColor="#EFF3FB" />
                        <SelectedRowStyle BackColor="#D1DDF1" Font-Bold="True" ForeColor="#333333" />
                        <SortedAscendingCellStyle BackColor="#F5F7FB" />
                        <SortedAscendingHeaderStyle BackColor="#6D95E1" />
                        <SortedDescendingCellStyle BackColor="#E9EBEF" />
                        <SortedDescendingHeaderStyle BackColor="#4870BE" />

                    </asp:GridView>

css代码

  protected void ProjectGridView_SelectedIndexChanged(object sender, EventArgs e)
{
     string projectid = (ProjectGridView.SelectedRow.FindControl("LinkProjectID") as Label).Text;
    PopUpMessage(projectid);
}

Answer 1

两件事

您无法在网格视图上设置OnSelectedIndexChanged="ProjectGridView_SelectedIndexChanged"并使用按钮来控制它。看到asp链接按钮不会更改gridview上的选定索引（OnSelectedIndexChanged方法最适用于下拉菜单。
只需使用按钮单击事件，因为您可以通过这种方式访问链接按钮的文本

前端代码

<asp:GridView ID="ProjectGridView" runat="server" ShowHeaderWhenEmpty="true"  AutoGenerateColumns="False" Visible="true" CellPadding="4" ForeColor="#333333" GridLines="None" ShowFooter="true">
                    <AlternatingRowStyle BackColor="White" Height="20px" />
                    <RowStyle Height="20px" />
                    <Columns>
                        <asp:TemplateField Visible="false">
                            <ItemTemplate>
                                <asp:Label Visible="false" ID="lblProjectID" runat="server" Text=' <%# Eval("Project_ID") %>'></asp:Label>
                            </ItemTemplate>
                        </asp:TemplateField>
                        <asp:TemplateField HeaderText="Project Number">
                            <ItemTemplate>
                                <asp:LinkButton ID="LinkProjectNumber" runat="server" OnClick="LinkProjectNumber_Click" Text=' <%# Eval("Project_Number") %>'></asp:LinkButton>
                            </ItemTemplate>
                            <FooterTemplate>
                                <asp:TextBox ID="ProjectNumberTextBox" runat="server" />
                            </FooterTemplate>
                        </asp:TemplateField>
                        <asp:TemplateField HeaderText="Project Name">
                            <ItemTemplate>
                                <%# Eval("Project_Name") %>
                            </ItemTemplate>
                            <FooterTemplate>
                                <asp:TextBox ID="ProjectNameTextBox" runat="server" />
                            </FooterTemplate>
                        </asp:TemplateField>
                        <asp:TemplateField HeaderText="Location">
                            <ItemTemplate>
                                <%# Eval("Project_Location") %>
                            </ItemTemplate>
                            <FooterTemplate>
                                <asp:TextBox ID="ProjectLocationTextBox" runat="server"></asp:TextBox>
                            </FooterTemplate>
                        </asp:TemplateField>
                        <asp:TemplateField HeaderText="Description">
                            <ItemTemplate>
                                <%# Eval("Project_Description") %>
                            </ItemTemplate>
                            <FooterTemplate>
                                <asp:TextBox ID="ProjectDescriptionTextBox" runat="server"></asp:TextBox>
                            </FooterTemplate>
                        </asp:TemplateField>
                        <asp:TemplateField>
                            <FooterTemplate>
                                <asp:Button ID="btnAdd" runat="server" Text="Add" OnClick="Add" CommandName="Footer" />
                            </FooterTemplate>
                        </asp:TemplateField>
                    </Columns>
                    <FooterStyle BackColor="#507CD1" HorizontalAlign="Center" Font-Bold="True" ForeColor="White" />
                    <HeaderStyle BackColor="#2784FC" Font-Bold="True" ForeColor="White" />
                    <PagerStyle BackColor="#2461BF" ForeColor="White" HorizontalAlign="Center" />
                    <RowStyle BackColor="#EFF3FB" />
                    <SelectedRowStyle BackColor="#D1DDF1" Font-Bold="True" ForeColor="#333333" />
                    <SortedAscendingCellStyle BackColor="#F5F7FB" />
                    <SortedAscendingHeaderStyle BackColor="#6D95E1" />
                    <SortedDescendingCellStyle BackColor="#E9EBEF" />
                    <SortedDescendingHeaderStyle BackColor="#4870BE" />

                </asp:GridView>

服务器端代码

protected void LinkProjectNumber_Click(object sender, EventArgs e)
{
     string projectid = (sender as LinkButton).Text;
     PopUpMessage(projectid);
}

那应该解决您的问题。哦，作为旁注，我还注意到您正在将“链接按钮ID”投射为标签（稍后会引起问题）。

编辑：我注意到您正在尝试获取项目ID，因此我有以下方法可以为您完成此操作（如果您遇到任何对象引用错误而不是让我知道，该方法就可以工作，我将尽力而为帮助，但我运行了这段代码，效果很好）

protected void LinkProjectNumber_Click(object sender, EventArgs e)
{
     string projectid = ((sender as LinkButton).NamingContainer.FindControl("lblProjectID") as Label).Text;
     PopUpMessage(projectid);
}

Answer 2

您的事件应为GridViewSelectEventArgs。喜欢

protected void ProjectGridView_SelectedIndexChanged(object sender, GridViewSelectEventArgs e)
 {
 string projectid = (ProjectGridView.SelectedRow.FindControl("LinkProjectID") as Label).Text;
 PopUpMessage(projectid);
 }

Answer 3

您必须通过GridView的<div class="huge"><?php echo $COUT; ?></div> <div class="huge"><?php foreach($USERS as $usr); echo *INSERT ECHO TABLES HERE* ?></div>事件来做到这一点：

在ASPX中，将RowCommand属性添加到CommandName：

LinkButton

在您后面的<asp:LinkButton ID="LinkProjectNumber" runat="server" Text=' <%# Eval("Project_Number") %>' CommandName='GetData'></asp:LinkButton>代码中：

cs

参考：https://stackoverflow.com/a/14255021/1821637

当单击链接按钮asp.net C＃时，SelectedIndexChanged无法在GridView中触发

3 个答案: