不清除页面重新加载或按钮单击事件时的文本框

Question

I have developed a website in C# asp.net which contains a Master Page . I have designed a top menu with Search bar( txtSearch ) and a Button ( LinkButton ). When I click on search Button it redirects to the page where searched data is to be displayed but when it redirects it clear's the txtSearch . What I want is not to clear the txtSearch on page redirect or page reload.

Top Menu (Search bar)

<asp:TextBox runat="server" ID="txtSearch" TextMode="SingleLine" CssClass="form-control" Placeholder="Search term..." />
<span class="input-group-btn">
    <asp:LinkButton runat="server" ID="btnSearch" CssClass="btn btn-default" type="button" OnClick="btnSearch_Click"><span class="glyphicon glyphicon-search"></span></asp:LinkButton>
</span>

I Hope that the question is clear.

Answer 1

What you can do is.. Store the TextBox value in Session in onclick() Function

protected void btnSubmit_Click(object sender, EventArgs e)
{
   Session["TextBoxVal"] = TextBox1.Text;//The particular TextBox that has value
}

and onPageLoad just assign the value to the TextBox value like this

 protected void Page_Load(object sender, EventArgs e)
    {
       if (!IsPostBack)
       {
            TextBox1.Text = (string)ViewState["TextBoxVal"];
       }
         //use this as per your needs just an example how to use
        if(IsPostBack)
        {
            TextBox1.Text = (string)ViewState["TextBoxVal"];
        }
    }

and once it is assigned value to the TexBox clear the session or it will keep assigning the same value.. do it like this

Session["TextBoxVal"] = null;

Answer 2

you have to pass data to another page.to pass data you can use various techniques

• Query string
• Session
• Cookies

pass data using above one method.

i will suggest Query string will be best option

Answer 3

您必须在页面之间的querystring中传递值以使其持久化。

Answer 4

放在一个会话中：

Session["Sample"] =null;