textbox填入後驗證輸入的合法或根據輸入的內容失去焦點後立即得出其他資訊

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 <x:SimpleForm ID="SimpleForm1" runat="server" EnableBackgroundColor="true" ShowBorder="False"                                BodyPadding="2px" ShowHeader="False">                                <Items>                                    <x:Panel ID="Panel3" ShowHeader="false" ShowBorder="false" EnableBackgroundColor="true"                                        BodyPadding="2px" Layout="Column" runat="server">                                        <Items>                                        <x:Label ID="Label14" Width="90px" runat="server" ShowLabel="false" Text="教工號：" EncodeText="false"                                                CssClass="inline" ShowRedStar="true" >                                            </x:Label>                                            <x:TextBox ID="txtEmployeeNumber" runat="server" CssClass="mright" Required="true"                                                Width="200px" AutoPostBack="true" OnTextChanged="textChanged_Click">                                            </x:TextBox>                                            <x:Label ID="Label2" Width="90px" runat="server" ShowLabel="false" Text="姓名：" EncodeText="false"                                                CssClass="inline" ShowRedStar="true">                                            </x:Label>                                            <x:TextBox ID="txtName" runat="server" CssClass="mright" Required="true"                                                Width="200px">                                            </x:TextBox>                                                </Items>                                    </x:Panel>                                   <x:Panel ID="Panel4" ShowHeader="false" ShowBorder="false" EnableBackgroundColor="true"                                        BodyPadding="2px" Layout="Column" runat="server">                                        <Items>                                            <x:Label ID="Label6" Width="90px" runat="server" ShowLabel="false" Text="&nbsp性別：" EncodeText="false"                                                CssClass="inline" ShowRedStar="true">                                            </x:Label>                                            <x:RadioButton ID="rbtnNan" GroupName="MyRadioGroup1" Label=" " LabelSeparator="" Checked="true"                                                Width="105px" Text="男" runat="server">                                            </x:RadioButton>                                            <x:RadioButton ID="rbtnNv" GroupName="MyRadioGroup1" Label=" " LabelSeparator=""                                                Width="105px" Text="女" runat="server">                                            </x:RadioButton>                                            <x:Label ID="Label3" Width="90px" runat="server" ShowLabel="false" Text="出生日期：" EncodeText="false"                                                CssClass="inline" ShowRedStar="true">                                            </x:Label>                                            <x:DatePicker ID="txtBirthday" runat="server" DateFormatString="yyyy-MM-dd"  Required="true"                                                Width="200px">                                            </x:DatePicker>                                        </Items>                                    </x:Panel>                                                                        <x:Panel ID="Panel5" ShowHeader="false" ShowBorder="false" EnableBackgroundColor="true"  BodyPadding="2px"                                        Layout="Column" runat="server">                                        <Items>                                            <x:Label ID="Label7" Width="90px" runat="server" ShowLabel="false" Text="身份證：" EncodeText="false"                                                CssClass="inline" ShowRedStar="true">                                            </x:Label>                                            <x:TextBox ID="txtIDCard" runat="server" CssClass="mright" Required="true" Width="200px" EmptyText="請輸入18位的社會安全號碼" RegexPattern="IDENTITY_CARD" RegexMessage="請輸入正確的18位社會安全號碼碼" >                                            </x:TextBox>                                            <x:Label ID="Label9" Width="90px" runat="server" ShowLabel="false" Text="部門：" EncodeText="false"                                                CssClass="inline" ShowRedStar="true">                                            </x:Label>                                            <x:TextBox ID="txtPart" runat="server" CssClass="mright" Required="true"                                                Width="200px">                                            </x:TextBox>                                                                                   </Items>                                    </x:Panel>                                </Items>                            </x:SimpleForm>                        </Items>                    </x:GroupPanel>

　　根據輸入的教工號填入後立即得出其他的資訊，注意教工號txtEmployeeNumber控制項後的

OnTextChanged="textChanged_Click"
後台代碼：

  protected void textChanged_Click(object sender, EventArgs e)        {            if (txtEmployeeNumber.Text.Trim() != "")            {                employeeBLL.GetEmployeeInfoByEmployeeNumber(txtEmployeeNumber.Text.Trim());                if (employeeBLL.GetEmployeeInfoByEmployeeNumber(txtEmployeeNumber.Text.Trim()) == null)                {                    Alert.Show("對不起，你的資訊還沒有填入教師資訊表，請聯絡管理員！", MessageBoxIcon.Error);                }                else                {                    txtName.Text = employeeBLL.GetEmployeeInfoByEmployeeNumber(txtEmployeeNumber.Text.Trim()).Name;                    txtPart.Text = employeeBLL.GetEmployeeInfoByEmployeeNumber(txtEmployeeNumber.Text.Trim()).Part;                    txtIDCard.Text = employeeBLL.GetEmployeeInfoByEmployeeNumber(txtEmployeeNumber.Text.Trim()).IDcard;                    txtBirthday.Text = employeeBLL.GetEmployeeInfoByEmployeeNumber(txtEmployeeNumber.Text.Trim()).Birthday.ToString("yyyy-MM-dd");                }            }        }