【发布时间】：2015-04-13 14:18:43
【问题描述】：
我有一个 gridview，它实现了 SelectedIndexChanged 事件。现在，我添加了一个带有LinkButton 的模板字段来删除该行。但是，我无法单击GridView 上的链接按钮，因为它总是触发SelectedIndexChanged。
当SelectedIndexChanged 功能实现时，如何使删除按钮起作用。
<asp:GridView ID="gvOnboardingMembers" runat="server" AllowPaging="True" PageSize="30" AllowSorting="True" OnPageIndexChanging="gvOnboardingMembers_PageIndexChanging" OnRowDataBound="gvOnboardingMembers_RowDataBound" OnRowDeleting="gvOnboardingMembers_RowDeleting"
AutoGenerateColumns="False" OnSorting="gvOnboardingMembers_Sorting" EnableViewState="False" BackColor="White" BorderColor="#cccccc" BorderWidth="1px" CellPadding="2"
EmptyDataText="No onboarding member found" GridLines="None" OnSelectedIndexChanged="gvOnboardingMembers_SelectedIndexChanged" Width="100%">
<AlternatingRowStyle BackColor="#ededed" />
<Columns>
<asp:TemplateField HeaderText="OnboardingMemberID" Visible="false">
<ItemTemplate>
<asp:Label ID="lblOnboardingMemberID" runat="server" Text='<%#Eval("OnboardingMemberID") %>' />
</ItemTemplate>
</asp:TemplateField>
<asp:BoundField DataField="FirstName" HeaderText="First Name" SortExpression="FirstName" HeaderStyle-HorizontalAlign="Left" />
<asp:BoundField DataField="LastName" HeaderText="Last Name" SortExpression="LastName" HeaderStyle-HorizontalAlign="Left"/>
<asp:BoundField DataField="Email" HeaderText="Email" SortExpression="Email" HeaderStyle-HorizontalAlign="Left"/>
<asp:BoundField DataField="VendorName" HeaderText="Vendor" SortExpression="VendorName" HeaderStyle-HorizontalAlign="Left"/>
<asp:BoundField DataField="BusinessFunctionDisplayName" HeaderText="Business Function" SortExpression="BusinessFunctionDisplayName" HeaderStyle-HorizontalAlign="Left"/>
<asp:BoundField DataField="CreatedDate" HeaderText="Upload Timestamp" SortExpression="CreatedDate" HeaderStyle-HorizontalAlign="Left"/>
<asp:TemplateField HeaderText="">
<ItemTemplate>
<asp:LinkButton ID="lnkRemoveEntry" runat="server" OnClick="lnkRemoveEntry_Click" Text="Delete" />
</ItemTemplate>
</asp:TemplateField>
<asp:CommandField ItemStyle-Width="20" ShowDeleteButton="True" />
</Columns>
<FooterStyle BackColor="#cccccc" ForeColor="Black" />
<HeaderStyle BackColor="#6699cc" Font-Bold="True" ForeColor="White" BorderColor="#cccccc" BorderWidth="1px" />
<PagerStyle BackColor="#999999" ForeColor="Black" HorizontalAlign="Center" />
<RowStyle BackColor="#fefefe" ForeColor="Black" />
<SelectedRowStyle BackColor="#008A8C" Font-Bold="True" ForeColor="White" />
<SortedAscendingCellStyle BackColor="#F1F1F1" />
<SortedAscendingHeaderStyle BackColor="#0000A9" />
<SortedDescendingCellStyle BackColor="#CAC9C9" />
<SortedDescendingHeaderStyle BackColor="#000065" />
</asp:GridView>
后端代码
protected void gvOnboardingMembers_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
e.Row.Attributes["onmouseover"] = "this.style.cursor='pointer';this.style.textDecoration='underline';";
e.Row.Attributes["onmouseout"] = "this.style.textDecoration='none';";
e.Row.Attributes["onclick"] = Page.ClientScript.GetPostBackClientHyperlink(gvOnboardingMembers, "Select$" + e.Row.RowIndex);
e.Row.ToolTip = "Click to select this row.";
DataRowView dataItem = (DataRowView)e.Row.DataItem;
var removeEntry = e.Row.FindControl("lnkRemoveEntry") as LinkButton;
removeEntry.CommandArgument = dataItem["OnboardingMemberID"].ToString();
}
}
protected void gvOnboardingMembers_SelectedIndexChanged(object sender, EventArgs e)
{
foreach (GridViewRow row in gvOnboardingMembers.Rows)
{
if (row.RowIndex == gvOnboardingMembers.SelectedIndex)
{
row.BackColor = ColorTranslator.FromHtml("#A1DCF2");
row.ToolTip = string.Empty;
}
else
{
row.BackColor = ColorTranslator.FromHtml("#FFFFFF");
row.ToolTip = "Click to select this row.";
}
}
}
protected void Page_Load(object sender, EventArgs e)
{
BindOnboardingMember();
}
private void BindOnboardingMember()
{
DataView dv = new DataView(DataManager.ToDataTable<OnboardingMember>(DraftMembers));
dv.Sort = OnboardingMemberSortExpression;
gvOnboardingMembers.DataSource = dv;
gvOnboardingMembers.DataBind();
}
protected void lnkRemoveEntry_Click(object sender, EventArgs e)
{
var lnkButton = (LinkButton)sender;
}
protected void gvOnboardingMembers_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
if(DeleteOnboardingMember(Guid.Parse(((Label)(gvOnboardingMembers.Rows[e.RowIndex].Cells[0].FindControl("lblOnboardingMemberID"))).Text)))
BindOnboardingMember();
}
如果在 selectedIndexChanged 上有任何阻止 PostBack 的方法，请告诉我。我猜我的删除事件没有执行，因为每次回发页面时我的 gridview 都会反弹（请参阅 pageload 事件）。但是，为了使 SelectedIndexChanged 正常工作，这是必需的。
【问题讨论】：
-
如果你想删除行，最好使用
onRowDeleting，检查每一行的ID。 -
我也实现了 RowDeleting。它既不属于 RowDeleting 也不属于 Button Click。
-
你如何绑定你的gridview，它应该在
IsPostBack内，正如安格斯建议的那样。 -
我不能使用 IsPostBack，因为它会阻止 SelectedIndexChanged。我陷入了困境！请参考我对该错误建议的回复。