前臺部分：布局如圖所示：?

<div>
???
??????? 請輸入標題：<asp:TextBox ID="TextBox1" runat="server" Width="178px"></asp:TextBox>
??????? <br />
??????? 請輸入內容：<asp:TextBox ID="TextBox2" runat="server" Height="131px"
??????????? TextMode="MultiLine" Width="180px"></asp:TextBox>
??????? <br />
??????? <br />
??????? <asp:Button ID="btnsave" runat="server" Text="保存" οnclick="btnsave_Click" />
??????? <asp:Button ID="btnselect" runat="server" Text="查詢" οnclick="btnselect_Click" />
???
??? </div>

------------------后臺部分

?? protected void btnsave_Click(object sender, EventArgs e)
??????? {
??????????? Gushi gushi = new Gushi();
??????????? gushi.Title = TextBox1.Text;
??????????? gushi.Content = TextBox2.Text;
??????????? if (ViewState["gushi"] != null)
??????????? {
??????????????? //將ViewStae中存儲的List<Gushi>對象取出來
??????????????? List<Gushi> list = ViewState["gushi"] as List<Gushi>;
??????????????? //將新的內容添加到List<Gushi>中
??????????????? list.Add(gushi);
??????????????? ViewState["gushi"] = list;
??????????? }
??????????? else
??????????? {
??????????????? List<Gushi> list = new List<Gushi>();
??????????????? list.Add(gushi);
??????????????? ViewState["gushi"] = list;
??????????? }
??????????? TextBox1.Text = string.Empty;
??????????? TextBox2.Text = string.Empty;
??????? }

??????? protected void btnselect_Click(object sender, EventArgs e)
??????? {
??????????? TextBox2.Text = string.Empty;
??????????? if(ViewState["gushi"]!=null)
??????????? {
??????????? List<Gushi> list=ViewState["gushi"] as List<Gushi>;
??????????? foreach (Gushi item in list)
??????????? {
??????????????? if(item.Title==TextBox1.Text)
??????????????? {
??????????????????? TextBox2.Text = item.Content;
??????????????? }
??????????? }
??????????? }
??????? }

程序運行后，我在標框看中輸入php，下面也輸入內容，然后輸入net，同樣輸入內容，然后再回來查詢php，

查詢結果如圖所示：

轉載于:https://www.cnblogs.com/qzc900809/archive/2013/04/02/2996693.html

《新程序員》：云原生和全面數字化實踐50位技術專家共同創作，文字、視頻、音頻交互閱讀

總結

以上是生活随笔為你收集整理的ViewState的使用的全部內容，希望文章能夠幫你解決所遇到的問題。

如果覺得生活随笔網站內容還不錯，歡迎將生活随笔推薦給好友。