定位文本框焦点问题

Question

HMTL如下<form id="form1" runat="server">
    <div>
        <asp:TextBox ID="TextBox3" runat="server" AutoPostBack="True"></asp:TextBox><br />
        <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox><asp:Button ID="Button1"
            runat="server" Text="Button" /><br />
        <asp:TextBox ID="TextBox2" runat="server"></asp:TextBox>&nbsp;<asp:Button ID="Button2"
            runat="server" Text="Button" /><br />
        <br />
    
    </div>
    </form>
后台如下 Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        If Not Page.IsPostBack Then
            Button1.Attributes("onClick") = "javascript:this.disabled=true;__doPostBack(this.name,'');"
            TextBox1.Attributes.Add("onkeydown", "if(event.keyCode==13){event.keyCode=9,document.all.Button1.click();}")
            Button2.Attributes("onClick") = "javascript:this.disabled=true;__doPostBack(this.name,'');"
            TextBox2.Attributes.Add("onkeydown", "if(event.keyCode==13){event.keyCode=9,document.all.Button2.click();}")        End If
    End Sub    Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
        Response.Write(Me.TextBox1.Text)
    End Sub    Protected Sub Button2_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button2.Click
        Response.Write(Me.TextBox2.Text)
    End Sub我要实现的是当光标在某个文本框点回车提交数据后，光标还是定位在那个文本框。比如光标放在第TextBox1按下回车会触发Button1，我要实现的是触发Button1事件后，光标还是定位在TextBox1

Answer 1

/// <summary>
/// 设置光标位置
/// </summary>
/// <param name="control"></param>
/// <returns></returns>
public static bool SetFocus(System.Web.UI.Control control)
{
if (HttpContext.Current.Request.Browser.JavaScript)
{
control.Page.RegisterStartupScript("SetFocus","<script language='javascript'>document.all['" +
control.ClientID +"'].focus();</script>");
return true;
}
return false;
}