如何将客户端事件与服务器端事件ASP.NET，c＃进行交互 [英] how to interact client side events with sever side events ASP.NET,c#
问题描述
HI，
i有删除标签，因为我需要输入memberid或cardid然后点击OK.
当我点击OK按钮然后弹出应该来确认（OK，取消），如果按OK，需要删除记录并清除文本框。
我的问题是：
没有输入任何文本框，单击确定按钮然后它给出弹出窗口，
如何解决它。
这里是删除选项卡的代码：< pre lang =c＃>< pre lang = c＃>< table align = center >
< tr>
< td> < / td >
< td align = right > < / td >
< td class = style1 > 删除会员 < / td > < span class =code-keyword>< / tr >
< tr>< td> < / td > < td align = right>会员ID：< / td > < td 类 = style1 >
< asp：TextBox ID = txtdmemid runat = server高度= 21px宽度= 112px
> < / asp：TextBox > < / td > < / tr > ;
< tr>< td> < / td > < td align = 正确>卡ID：< / td > < td 类 = style1 >
< asp：TextBox ID = txtdcardid runat = server
> < / asp：TextBox > < / td > < / tr >
< tr>< td> < / td > < td align = right >
< asp：按钮ID = btndok runat = server Text = 确定 OnClick = btndok_Click onclientclick = return DeleteItem（） /> < / td >
< td class = style1 >
< asp：Button ID = < span class =code-string> btndcancel runat = server Text = 取消
onclick = btndcancel_Click OnClientClick = this.form.reset（）; return false; /> < / td > < / tr > < / 表格 > < / asp：Panel >
和ok按钮代码背后是：
< pre lang = c＃ > 受保护 < span class =code-keyword> void btndok_Click（ object sender，EventArgs e）
{
if （txtdmemid.Text！= || txtdcardid.Text！= ）
{
using （MySqlConnection con = new MySqlConnection（ConnectionString））
{
字符串 query = 从admin中删除member_id = @ memid或card_id = @ card< /跨度>;
MySqlCommand command = new MySqlCommand（query，con）;
command.Parameters.AddWithValue（ @ memid，txtdmemid.Text）;
command.Parameters.AddWithValue（ @ card，txtdcardid.Text）;
con.Open（）;
command.ExecuteNonQuery（）;
} // connection
} // 如果
// else
// {
// Response.Write（< script type ='text / javascript'>）;
// Response.Write（alert（'请输入成员ID或CARD ID'）; ）;
// Response.Write（< / script>）;
// }
}
你可以tr y带有Requiredfieldvalidator控件。
此链接可能有用
http://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.requiredfieldvalidator（v = vs.110）。 aspx [ ^ ]
javascript代码：
< script 语言 = javascript type = text / javascript >
function ConfirmOnDelete（SIMCODE）{
if（确认（你确定要删除）== true）{
window.location =del.aspx？SIMCODE =+ SIMCODE + & DOIF =+ 7;
返回true;
}
javascriopt代码将我重定向到带有查询字符串的del.aspx页面。我正在执行删除功能，你可以在按钮代码后删除功能。
按钮代码：
< button id =btndelvalue =删除class =btn btn-danger占位符=删除onclick =ConfirmOnDelete（'<％＃Eval（MobileNo） ％>'）> Del
< / button>
删除del.aspx页面上的功能。
protected void Page_Load（object sender，EventArgs e）
{
doif = Convert.ToInt32（Request.QueryString [DOIF]）;
if（doif == 1）
{
rec = Request.QueryString [ORDCODE]。ToString（）;
rec_id = Convert.ToInt32（rec）;
dl.DeleteCompany（rec_id）;
Response.Redirect（CompanySetup.aspx）;
//Page.RegisterStartupScript(\"close，< script> self.close（）;< / script>）;
//this.ClientScript.RegisterClientScriptBlock（this.GetType（），Close，window.close（），true）;
}
}
请告诉我，如果你得到的话。
它在我的所有项目中运作良好。
如果我在你的鞋子里我会做简单的javascript / jquery验证来检查里面的修剪值是否合适文本框的长度大于等于0，然后我会运行你的脚本。
< script type =text / javascript>
函数DeleteItem（）{
if（
HI,
i have delete tab , in that i need to enter either memberid or cardid then hit OK.
when i hit OK button then popup should come for confirmation (OK,Cancel),if press OK ,need to delete record and clear the textbox.
my problem is:
with out entering any in textboxes ,click OK button then it's giving popup,
how to solve it.
here is the code for Delete tab:
<pre lang="c#"><table align="center">
<tr>
<td></td>
<td align="right" ></td>
<td class="style1">Delete Member </td></tr>
<tr><td></td><td align="right">Member ID: </td><td class="style1">
<asp:TextBox ID="txtdmemid" runat="server" Height="21px" Width="112px"
></asp:TextBox> </td></tr>
<tr><td></td><td align="right">Card ID: </td><td class="style1">
<asp:TextBox ID="txtdcardid" runat="server"
></asp:TextBox> </td></tr>
<tr><td></td><td align="right">
<asp:Button ID="btndok" runat="server" Text="OK" OnClick="btndok_Click" onclientclick="return DeleteItem()" /> </td>
<td class="style1">
<asp:Button ID="btndcancel" runat="server" Text="Cancel"
onclick="btndcancel_Click" OnClientClick="this.form.reset();return false;" /> </td></tr></table></asp:Panel>
and ok button code behind is:
<pre lang="c#"> protected void btndok_Click(object sender, EventArgs e)
{
if (txtdmemid.Text != "" || txtdcardid.Text != "")
{
using (MySqlConnection con = new MySqlConnection(ConnectionString))
{
String query = "delete from admin where member_id=@memid OR card_id=@card";
MySqlCommand command = new MySqlCommand(query, con);
command.Parameters.AddWithValue("@memid",txtdmemid.Text);
command.Parameters.AddWithValue("@card", txtdcardid.Text);
con.Open();
command.ExecuteNonQuery();
}//connection
}//if
//else
//{
// Response.Write("<script type='text/javascript'>");
// Response.Write("alert('PLEASE ENTER EITHER MEMBER ID or CARD ID');");
// Response.Write("</script>");
//}
}You can try with Requiredfieldvalidator control.
This link may be usefull
http://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.requiredfieldvalidator(v=vs.110).aspx[^]
javascript code:
<script language="javascript" type="text/javascript"> function ConfirmOnDelete(SIMCODE) { if (confirm("Are you SURE you want to Delete") == true) { window.location = "del.aspx?SIMCODE=" + SIMCODE + "&DOIF=" + 7; return true; }
The javascriopt code is redirecting me to the del.aspx page with query string. where i'm performing delete function, u can c delete function after button code.
button code:
<button id="btndel" value="Delete" class="btn btn-danger" placeholder="Delete" onclick="ConfirmOnDelete('<%# Eval("MobileNo") %>')">Del </button>
Delete function on del.aspx page onload.
protected void Page_Load(object sender, EventArgs e) { doif = Convert.ToInt32(Request.QueryString["DOIF"]); if (doif == 1) { rec = Request.QueryString["ORDCODE"].ToString(); rec_id = Convert.ToInt32(rec); dl.DeleteCompany(rec_id); Response.Redirect("CompanySetup.aspx"); //Page.RegisterStartupScript("close", "<script>self.close();</script>"); //this.ClientScript.RegisterClientScriptBlock(this.GetType(), "Close", "window.close()", true); } }
plz let me know, if u get it.
its working good in all my projects.
If am in your shoes i will just do simple javascript / jquery validation to check whether the trimmed value inside the textbox is having proper length>0 or not then i will Run your script.
<script type="text/javascript"> function DeleteItem() { if (
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