模板字段中的按钮赢得';t启动单击功能
本文关键字:启动 功能 单击 字段 按钮 | 更新日期: 2023-09-27 18:24:07
我有一个网格视图,它通过参数化的sqldatasource获取信息。我想通过按下一个按钮来启动一个函数,发送其中一个字段(id)。但功能甚至不会启动。。
这是我的aspx部分:
<asp:SqlDataSource ID="SqlDataSource2" runat="server"
ConnectionString="<%$ ConnectionStrings:igroup20_test2ConnectionString %>"
SelectCommand="select mie.e_num, mie.id, m.f_name, m.l_name from memberInEvent mie, member m where e_num=@num and mie.id=m.id" >
<SelectParameters>
<asp:Parameter DefaultValue="066643776" Name="num" Type="String" />
</SelectParameters>
</asp:SqlDataSource>
<asp:PlaceHolder ID="head_line_ph" runat="server"></asp:PlaceHolder>
<br /><br />
<asp:GridView ID="GridView1" runat="server" DataSourceID="SqlDataSource1"
AutoGenerateColumns="false" CssClass="tableStatic">
<Columns>
<asp:TemplateField HeaderText="הסר מאירוע">
<ItemTemplate>
<asp:Button ID="delete_mem" CommandArgument='<%# Bind("id") %>' runat="server" Text="הסר מאירוע" OnClick="remove_member" CssClass="btn btn-primary" />
</ItemTemplate>
</asp:TemplateField>
<asp:BoundField ReadOnly="True" HeaderText="ת.ז"
InsertVisible="False" DataField="id"
SortExpression="ת.ז">
</asp:BoundField>
<asp:BoundField ReadOnly="True" HeaderText="שם פרטי"
InsertVisible="False" DataField="f_name"
SortExpression="שם פרטי">
</asp:BoundField>
<asp:BoundField ReadOnly="True" HeaderText="שם משפחה"
InsertVisible="False" DataField="l_name"
SortExpression="שם משפחה">
</asp:BoundField>
</Columns>
</asp:GridView>
下面是我的代码:
protected void Page_Load(object sender, EventArgs e)
{
string e_num = Request.QueryString["enum"];
Label headline_lbl = new Label();
headline_lbl.Text = db.return_event_name(e_num);
headline_lbl.CssClass = "head_line";
head_line_ph.Controls.Add(headline_lbl);
SqlDataSource2.SelectParameters["num"].DefaultValue = e_num;
GridView1.DataSourceID = "SqlDataSource2";
GridView1.DataBind();
if (!IsPostBack)
{
List<string[]> ids_list = db.return_ids_for_event(Convert.ToInt32(e_num));
foreach (string[] s in ids_list)
{
DropDownList1.Items.Add(new ListItem(s[0], s[1]));
}
}
}
protected void remove_member(object sender, EventArgs e)
{
string mem_id = ((Button)sender).CommandArgument;
db.remove_member(mem_id, num);
Response.Redirect("memberInevents.aspx?enum=" + num);
}
编辑:
在阅读了苏哈尼·莫迪的答案后,我把它改为对gridview的rowcommand开火:(但仍然没有开火)
<asp:GridView ID="GridView1" OnRowCommand="GridView1_RowCommand" runat="server" DataSourceID="SqlDataSource1"
AutoGenerateColumns="false" CssClass="tableStatic">
<Columns>
<asp:TemplateField HeaderText="הסר מאירוע">
<ItemTemplate>
<asp:Button ID="delete_mem" CommandArgument='<%# Bind("id") %>' CommandName="MyRowButton" runat="server" Text="הסר מאירוע" CssClass="btn btn-primary" />
</ItemTemplate>
</asp:TemplateField>
<asp:BoundField ReadOnly="True" HeaderText="ת.ז"
InsertVisible="False" DataField="id"
SortExpression="ת.ז">
</asp:BoundField>
<asp:BoundField ReadOnly="True" HeaderText="שם פרטי"
InsertVisible="False" DataField="f_name"
SortExpression="שם פרטי">
</asp:BoundField>
<asp:BoundField ReadOnly="True" HeaderText="שם משפחה"
InsertVisible="False" DataField="l_name"
SortExpression="שם משפחה">
</asp:BoundField>
</Columns>
</asp:GridView>
cs:
protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)
{
if (e.CommandName == "MyRowButton")
{
string mem_id = e.CommandArgument.ToString();
db.remove_member(mem_id, num);
Response.Redirect("memberInevents.aspx?enum=" + num);
}
}
将页面加载的所有代码放在IsPostBack块中。
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
string e_num = Request.QueryString["enum"];
Label headline_lbl = new Label();
headline_lbl.Text = db.return_event_name(e_num);
headline_lbl.CssClass = "head_line";
head_line_ph.Controls.Add(headline_lbl);
SqlDataSource2.SelectParameters["num"].DefaultValue = e_num;
GridView1.DataSourceID = "SqlDataSource2";
GridView1.DataBind();
List<string[]> ids_list = db.return_ids_for_event(Convert.ToInt32(e_num));
foreach (string[] s in ids_list)
{
DropDownList1.Items.Add(new ListItem(s[0], s[1]));
}
}
}
如果控件(按钮)位于网格视图的一行中,则其事件将不会像普通按钮那样触发。这称为事件冒泡。如果控件位于容器内,则它们将成为该容器的子级。例如,在您的情况下,button是gridview的子项,在这种情况下,子项不能直接启动他们的事件。他们会将事件发送到他们的容器/父级,即在您的情况下的gridview,您需要处理该父级的事件,即gridview。
尝试使用网格视图的OnRowCommand事件。这应该会有所帮助。您可以使用"FindControl"方法在该行中查找按钮控件。
希望这能有所帮助!如果你需要进一步的帮助,请告诉我。
我想这是你的按钮
<ItemTemplate>
<asp:Button ID="delete_mem" CommandArgument='<%# Bind("id") %>' runat="server" Text="הסר מאירוע" OnClick="remove_member" CssClass="btn btn-primary" />
</ItemTemplate>
更改为:
<ItemTemplate>
<asp:Button ID="delete_mem" CommandArgument='<%# Eval("id") %>' runat="server" Text="הסר מאירוע" CommandName="remove_member" CssClass="btn btn-primary" />
</ItemTemplate>
现在处于网格视图中的rowcomand事件
protectected void Gv_RowCommand(object sender, GridRowCommandEventArgs e)
{
if(e.CommandName.Equals("remove_member"))
{
string mem_id = e.CommandArgument.ToString();
db.remove_member(mem_id, num);
}
System.Thread.Sleep(500); // To hold the current thread for few second to complete the operation and then redirect to your desired page
Response.Redirect("memberInevents.aspx?enum=" + num);
}
请参阅此处你的旧密码。
SqlDataSource2.SelectParameters["num"].DefaultValue = e_num;
GridView1.DataSourceID = "SqlDataSource2";
GridView1.DataBind();
if (!IsPostBack)
{
List<string[]> ids_list = db.return_ids_for_event(Convert.ToInt32(e_num));
foreach (string[] s in ids_list)
{
DropDownList1.Items.Add(new ListItem(s[0], s[1]));
}
}
新代码:
SqlDataSource2.SelectParameters["num"].DefaultValue = e_num;
if (!IsPostBack)
{
GridView1.DataSourceID = "SqlDataSource2";
GridView1.DataBind();
List<string[]> ids_list = db.return_ids_for_event(Convert.ToInt32(e_num));
foreach (string[] s in ids_list)
{
DropDownList1.Items.Add(new ListItem(s[0], s[1]));
}
}
问题:
绑定必须在内部!Ispostback