What is the difference between add 'text' property or directly use within tags?

for example :

what is the exact difference between following statements:

    <asp:TextBox ID="TextBox1" runat="server">hi</asp:TextBox>

and

    <asp:TextBox ID="TextBox1" runat="server" text="开发者_运维知识库HI"></asp:TextBox>

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There is Simply No Difference.

You can change the text of both texboxes from code behind using textbox1.text = "something".