GridView_RowCommand未触发

Question

我对ASP.NET Webforms...My的问题还很陌生，因为我不能以任何方式触发LinkButton命令DetailsReportLink。我尝试了在!IsPostBack中绑定，但仍然没有成功...调试不会捕获GridView_RowCommand方法中的任何内容。

<asp:GridView ID="GridView" CssClass="Gridview" runat="server"
                                Width="100%" AutoGenerateColumns="False" OnRowCommand="GridView_RowCommand" ShowFooter="false">
                                <Columns> 
                                        <asp:TemplateField  ItemStyle-Width="150px" HeaderText="User Info">
                                             <ItemTemplate ><p style="text-align:left"><%#Eval("Name")%></p>
                                        </ItemTemplate>  </asp:TemplateField>
                                    <asp:TemplateField ItemStyle-CssClass="text-left" ItemStyle-Width="110px" HeaderText="Mobile No">
                                        <ItemTemplate>
                                            <p style="text-align:center"><%# Eval("MobileNo")%></p>
                                        </ItemTemplate>
                                    </asp:TemplateField>
                                    <asp:TemplateField ItemStyle-Width="80px" HeaderText="Key Gen">
                                        <ItemTemplate>
                                            <%# Eval("HishabNumber")%>
                                        </ItemTemplate>
                                    </asp:TemplateField>
                                    <asp:TemplateField ItemStyle-Width="70px" HeaderText="Balance">
                                        <ItemTemplate>
                                            <%# Eval("LoanTakerBalance")%>
                                        </ItemTemplate>
                                    </asp:TemplateField>
                                    <asp:TemplateField ItemStyle-Width="140px" >
                                        <ItemTemplate>
                                            <asp:LinkButton ID="DetailsLinkBtn" runat="server"  CommandArgument='<%# Eval("MemberId")%>' CommandName="DetailsReportLink" CssClass="btn btn-info" Text="Details" />
                                        </ItemTemplate>
                                    </asp:TemplateField>
                                </Columns>
                                <PagerStyle BackColor="#3C8DBC" ForeColor="White" />
                                <HeaderStyle BackColor="#3C8DBC" ForeColor="White" />
                            </asp:GridView>

protected void Page_Load(object sender, EventArgs e)
    {  
        if (!IsPostBack)
        {
           DataTable dt = objdalTransactionEntry.GetLoanReceivedByLoanTakerIdForLoanManagement(Sessions.Name.UserId);
            if (dt.Rows.Count > 0)
            {
                GridView.DataSource = dt;
                GridView.DataBind();
                lblMessage.Visible = false;
            }
            else
            {
                GridView.DataSource = null;
                GridView.DataBind();
                lblMessage.Text = "No Info";
                lblMessage.ForeColor = System.Drawing.Color.Red;
                lblMessage.Visible = true;
            }
        }
    }

 protected void GridView_RowCommand(object sender, GridViewCommandEventArgs e)
    { 
//DEBUG DOES NOT REACH HERE
        try
        {
            if (e.CommandName == "DetailsReportLink")
            {
                long MemberId = Convert.ToInt64(e.CommandArgument.ToString());
                Response.Redirect("~/Pages/Member/MemberCreate?ID=" + System.Web.HttpUtility.UrlEncode(EncryptionDecryption.Encrypt(MemberId.ToString(), true)));
            }
        }
        catch (Exception) { }
    }

Answer 1

绝对必须在页面加载事件中删除gv的重新绑定。在IsPostBack = False时加载一次。

您不会，也永远不会在每次页面加载事件中重新加载和重新绑定网格-您将破坏任何可能的代码流，并且重新绑定将重新设置行命令事件。删除重新绑定网格的else代码。gv将很好地保持其状态，并在回发后很好地存活下来，并保留其价值。不要在每个帖子上重新绑定整个网格。在您的例子中，出于某种奇怪的原因，在回发的"else“中- true，您有代码将gv置为空-该代码必须删除！