asp. net Textbox server control
- 2020-06-23 00:09:35
- OfStack
<body>
<form id="form1" runat="server">
<div>
Name: <asp:TextBox ID="txtUser" runat="server"></asp:TextBox>
<br />
<br />
Gender: <asp:RadioButtonList ID="rblsex" runat="server">
<asp:ListItem> male </asp:ListItem>
<asp:ListItem> female </asp:ListItem>
</asp:RadioButtonList>
Password: <asp:TextBox ID="txtPwd" runat="server" TextMode="Password"></asp:TextBox>
<br />
Mobile phone: <asp:TextBox ID="txttel" runat="server"
ontextchanged="TextBox3_TextChanged"></asp:TextBox>
<br />
Brief introduction: <br />
<asp:TextBox ID="txtinfo" runat="server"></asp:TextBox>
<br />
<br />
<asp:ImageButton ID="ImageButton1" runat="server" Height="58px"
ImageUrl="~/img/QQ screenshots 20130909140346.png" Width="72px" />
<br />
<br />
<br />
<br />
<br />
</div>
</form>
</body>
The event code for textChange is as follows:
protected void txtNum2_TextChanged(object sender, EventArgs e)
{
if (txtNum2.Text.Length == 0)
{
//Page.RegisterClientScriptBlock("","<script>alert(' Please enter the 1 The number of ');</script>");
Page.ClientScript.RegisterClientScriptBlock(this.GetType(), "", "<script>alert(' Please enter the 1 The number of ');</script>");
txtNum2.Focus();
}
else
{
int result;
bool n1 = Information.IsNumeric(txtNum2.Text.Trim());
if (n1)
{
result = int.Parse(txtNum2.Text.Trim()) % 2;
if (result == 0)
{
txtSum.Text = " An even number ";
}
else
{
txtSum.Text = " An odd number ";
}
}
}
}
}