!IsPostBack始终返回true

Question

我正在尝试为我的gridview.When实现搜索操作，我第一次加载我的页面!IsPostBack运行良好，但当我单击搜索按钮时，我的页面再次加载，并且!IsPostBack返回true value.So，我无法执行我的搜索操作这是我的代码。

protected void Page_Load(object sender, EventArgs e)
{
    if(!IsPostBack)
    {
        ((Label)Master.FindControl("Label1")).Text = (string)Session["sname"];

        fillData();
    }
}

public void fillData()
{
    if (con.State == ConnectionState.Open)
    {
        con.Close();
    }

    con.Open();
    SqlCommand cmd = new SqlCommand("SELECT * FROM EBR_Supplier where DeleteFlag=" + 0 + " ORDER BY RowId ASC", con);
    SqlDataAdapter adap = new SqlDataAdapter(cmd);

    DataSet ds = new DataSet();

    adap.Fill(ds);
    GridView1.DataSource = ds;
    GridView1.DataBind();    
}

protected void GridView1_PageIndexChanging(object sender, GridViewPageEventArgs e)
{
    GridView1.PageIndex = e.NewPageIndex;
    fillData();
}

protected void search_Click(object sender, EventArgs e)
{
    string id = txtid.Text;
    if (con.State == ConnectionState.Open)
    {
        con.Close();
    }

    con.Open();
    SqlCommand cmd = new SqlCommand("SELECT * FROM EBR_Supplier where DeleteFlag=" + 0 + " and SupplierId='" + id + "' ORDER BY RowId ASC", con);
    SqlDataAdapter adap = new SqlDataAdapter(cmd);

    DataSet ds = new DataSet();
    adap.Fill(ds);
    GridView1.DataSource = ds;
    GridView1.DataBind();
}

Answer 1

我已经找到了解决方案，我在我的母版页上有一个表单控件。我删除了它对我有帮助。感谢大家抽出时间来回答我的问题。