HGo*_*mez 3 c# asp.net confirm gridview
我有一个实现gridview的onRowDeleting方法.我想用弹出消息提示用户确认是否要删除此项目.如果用户单击"确定","确认"或类似的东西,那么我希望onRowsDeleting将进程和记录删除.但是如果用户按下"否",那么我希望取消该方法并且不删除记录.
如何才能做到这一点?
这是我gridview和onRowDeleting代码背后方法.
<asp:GridView runat="server" ID="gvShowQuestionnaires" HeaderStyle-CssClass="table_header" CssClass="view" AlternatingRowStyle-CssClass="alt" AlternatingRowStyle-BackColor="#f3f4f8" AutoGenerateColumns="False"
DataKeyNames='QuestionnaireID' OnRowDeleting="gvShowQuestionnaires_RowDeleting" OnRowEditing="gvShowQuestionnaires_RowEdit" OnSelectedIndexChanged="gvShowQuestionnaires_SelectedIndexChanged" FooterStyle-CssClass="view_table_footer" >
<Columns>
<asp:BoundField DataField="QuestionnaireID" HeaderText="ID" HeaderStyle-Width="80px" ItemStyle-CssClass="bo"></asp:BoundField>
<asp:BoundField DataField="QuestionnaireName" HeaderText="Questionnaire Name" />
<asp:ButtonField CommandName="select" ButtonType="Link" Text="view results" />
<asp:CommandField HeaderText="Options" CausesValidation="true" ShowDeleteButton="True" ShowEditButton="true" EditText="Edit">
</asp:CommandField>
</Columns>
</asp:GridView>
protected void gvShowQuestionnaires_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
int questionnaireID = (int)gvShowQuestionnaires.DataKeys[Convert.ToInt32(e.RowIndex)].Value;
GetData.DeleteQuestionnaire(questionnaireID);
gvShowQuestionnaires.DataSource = DT;
gvShowQuestionnaires.DataBind();
lblActivity.Visible = true;
lblActivity.Text = "Your questionnaire has been deleted";
}
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Tim*_*ter 11
你应该使用javascript在客户端执行此操作.
因此,您可以处理GridView的RowDataBound事件以将其添加到Delete-Button OnClientClick:
protected void gvShowQuestionnaires_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
// reference the Delete LinkButton
LinkButton db = (LinkButton)e.Row.Cells[3].Controls[0];
db.OnClientClick = "return confirm('Are you certain you want to delete this questionnaire?');";
}
}
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http://msdn.microsoft.com/en-us/library/bb428868.aspx
这JS-函数将返回用户是否点击ok或cancel.如果js-eventhandler返回false,则页面不会回发到服务器.
“返回确认(..”)Javascript 走在正确的轨道上。
问题是ASP.NET会附加js来调用__doPostBack
所以你会在 HTML 中得到类似这样的删除按钮:
OnClickClient="return confirm('Are you sure you want to delete this record?');";javascript:__doPostBack('ctl00$Main$PlansGrid','Delete$101')"
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发生的情况是: 1) 用户单击“删除”按钮。2) 显示确认对话框。3) 用户单击“确定”按钮。4) 确认返回True。5) 在语句执行开始时返回,并且不调用 __doPostBack。
解决办法是只有当confirm返回false时才返回:
OnClientClick="if(!confirm('Are you sure you want to delete this Plan?')) return;"
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如果用户单击“确定”确认,则返回 True,然后执行 __doPostBack。
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