C# 获取按钮单击 gridview 上每一行的单元格值

Question

我有带有按钮的 gridview。我希望每行上的按钮获取每行 gridview 中第一个单元格的值。例如下表:

|标题 1 |标题 2 | header 3 |
|快乐 |悲伤 |按钮 1 |
|担心 |生气 |按钮 2 |
|兴奋 |皱眉 |按钮 3 |

当我按下按钮 1 时，它会显示 Happy。如果我按下按钮 2，它会显示 Worry。等等等等。需要您帮助我如何实现这一目标。

.HTML

<asp:gridview id="grdCreateGroup" runat="server" DataKeyNames="id" AutoGenerateColumns="false" OnRowCommand="grdCreateGroup_RowCommand" OnRowDataBound="grdCreateGroup_RowDataBound">
            <Columns>
                <asp:BoundField DataField="admissionNo" HeaderText="Admission No." />
                <asp:BoundField DataField="fullName" HeaderText="Full Name" />
                <asp:templatefield headertext="">
                    <itemtemplate>
                        <asp:Button ID="btnSendInvite" runat="server" Text="Send Invite" CommandName="sendInvite" /> 
                    </itemtemplate>
                </asp:templatefield>
            </Columns>
        </asp:gridview>

.CS

protected void grdCreateGroup_RowCommand(object sender, GridViewCommandEventArgs e)
        {
            if (e.CommandName == "sendInvite")
            {
                account accounta = new account();
                account accountb = new account();
                accountManager accountManager = new accountManager();
                invite invite = new invite();
                inviteManager inviteManager = new inviteManager();
                string emailAddress, admissionNo;
                bool status = true;

                emailAddress = HttpContext.Current.User.Identity.Name;
                accounta = accountManager.getAccInfoByEmailAddress(emailAddress);

                invite.leaderName = accounta.fullName;
                invite.groupNo = accounta.groupNo;
                //invite.recipientEmailAddress = accountb.recipientEmailAddress;

                //status = inviteManager.sendInvite(invite);

                GridViewRow Row = grdCreateGroup.Rows[0];
                Button btnSendInvite = (Button)Row.FindControl("btnSendInvite");

                if (status == true)
                {
                    divMessage.InnerHtml = invite.groupNo.ToString();

                    btnSendInvite.Text = "Invite Sent";
                    btnSendInvite.Enabled = false;
                }
                else
                {
                    divMessage.InnerHtml = "Record not added in database";
                }
            }
        }

Answer 1

将 CommandArgument='<%# Container.DataItemIndex %>' 添加到您的按钮，在您后面的代码中您可以获得引发事件的行。

 <asp:Button ID="btnSendInvite" runat="server" Text="Send Invite" CommandName="sendInvite"  CommandArgument='<%# Container.DataItemIndex %>'/> 

获取代码后面的行

protected void grdCreateGroup_RowCommand(object sender, GridViewCommandEventArgs e)
        {
            if (e.CommandName == "sendInvite")
            {
                int index = Convert.ToInt32(e.CommandArgument);
            GridViewRow row = grdCreateGroup.Rows[index];

                  Button b = (Button)row.FindControl("btnSendInvite");
                   b.Text = row.Cells[0].Text;

            }
}