ASP:TextBox中获取用户输入值的问题

Question

把给TEXTBOX付值的代码加个判断
if(!IsPostBack)
{
 ....
}

Answer 1

顶楼上
if(!IsPostBack) 
{ 
}

Answer 2

相关的代码:由于在翻页后,文本框中的值会消失,上面的if 判断可能就没用了.希望把这个也帮忙改一下..using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using Fx.OracleDAL;
using Fx.Com.IDAL;
using Fx.Com.Model;
public partial class UserControls_SchoolDataView : System.Web.UI.UserControl
{
    protected void Page_Load(object sender, EventArgs e)
    {
        QueryUniversity();
    }
    protected void frmAspNetPager_PageChanged(object sender, EventArgs e)
    {
        QueryUniversity();
    }    protected void btnQuery_Click(object sender, EventArgs e)
    {
        if (this.txtProvince.Text.Equals("") && this.txtSchoolName.Text.Equals("") && this.txtCity.Text.Equals("") && this.txtSchoolType.Text.Equals(""))
        {
            Response.Write("<script>alert('请输入您要查询的名称！')</script>");
        }
        else
        {
            QueryUniversity();
        }    }    /*************************需要调用的方法****************************/
    //总查询以及根据相关条件查询    void QueryUniversity()
    {        UniversityInfo objUniversityInfo = new UniversityInfo();        objUniversityInfo.Zone = this.txtProvince.Text;        objUniversityInfo.City = this.txtCity.Text;        objUniversityInfo.Name = this.txtSchoolName.Text;        objUniversityInfo.Type = this.txtSchoolType.Text;
        if (this.txtProvince.Text != "")
        {
            QueryAllUniversity(objUniversityInfo, "Two");
        }
        else if (this.txtCity.Text != "")
        {
            QueryAllUniversity(objUniversityInfo, "Three");
        }
        else if (this.txtSchoolName.Text != "")
        {
            QueryAllUniversity(objUniversityInfo, "Four");
        }
        else if (this.txtSchoolType.Text != "")
        {
            QueryAllUniversity(objUniversityInfo, "Five");
        }
        else if (this.txtProvince.Text != "" || this.txtCity.Text != "")
        {
            QueryAllUniversity(objUniversityInfo, "Six");
        }
        else if (this.txtSchoolType.Text != "" || this.txtSchoolName.Text != "")
        {
            QueryAllUniversity(objUniversityInfo, "Seven");
        }
        else
        {
            QueryAllUniversity(objUniversityInfo, "One");
        }
    }
    void QueryAllUniversity(UniversityInfo objUniversityInfo,string bl)
    {
        University objUniversity = new University();        int RecordCount = 0;        this.GridView1.DataSource = objUniversity.QueryAllUniversity(this.frmAspNetPager.CurrentPageIndex, this.frmAspNetPager.PageSize, out RecordCount, objUniversityInfo, bl);        this.GridView1.DataBind();        this.frmAspNetPager.RecordCount = RecordCount;
    }
}

Answer 3

    protected void Page_Load(object sender, EventArgs e) 
    { 
       if(!IsPostBack) 
       { 
          QueryUniversity(); 
       }        
    }试一下这个