Inserting values to  SQL Exp DB from a text box on button command

<div style="height: 375px">
 
    <asp:TextBox ID="TextBox1" runat="server" AutoPostBack="true"></asp:TextBox>
 
    <asp:Button ID="Button1" runat="server" Text="Button" onclick="Button1_Click" />
    
    <asp:SqlDataSource ID="SqlDataSource1" runat="server" 
        ConnectionString="<%$ ConnectionStrings:ConnStrLiberty %>" 
        InsertCommand="INSERT INTO [test] ([test1]) VALUES (@test1)" 
        ConflictDetection="CompareAllValues" 
        DeleteCommand="DELETE FROM [test] WHERE [test1] = @original_test1" 
        OldValuesParameterFormatString="original_{0}" 
        SelectCommand="SELECT [test1] FROM [test] WHERE ([test1] = @test1)">
        <SelectParameters>
            <asp:ControlParameter ControlID="TextBox1" Name="test1" PropertyName="Text" 
                Type="String" />
        </SelectParameters>
        <DeleteParameters>
            <asp:Parameter Name="original_test1" Type="String" />
        </DeleteParameters>
        <InsertParameters>
            <asp:Parameter Name="test1" Type="String" />
        </InsertParameters>
    </asp:SqlDataSource>
 
</div>