Do you know not to use LinkButton?
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If we want to refresh and data bind the same page from client side, we can use the javascript function calls "__doPostBack". We shouldn't fire this post back in LinkButton. Otherwise, there will be an error.
Figure: Right click the link with \_\_doPostBack event
Figure: New window with incorrect URL
<asp:Panel runat="server" ID="mUpdatePanel" OnLoad="mUpdatePanel_Load"><asp:Label runat="server" ID="lblTime" /><br /><asp:GridView ID="gvList" runat="server" AutoGenerateColumns="false"><Columns><asp:BoundField DataField="ID" HeaderText="ID" /></Columns><Columns><asp:BoundField DataField="Name" HeaderText="Name" /></Columns></asp:GridView><br />ID:<asp:TextBox ID="txtID" runat="server"/>Name:<asp:TextBox ID="txtName" runat="server"/></asp:Panel>C#:protected void mUpdatePanel_Load(object sender, EventArgs e){lblTime.Text = DateTime.Now.ToLongTimeString();ArrayList mList = (ArrayList)ViewState["List"];if (txtName.Text.Length > 0){Client mClient = new Client();mClient.ID = Int32.Parse(txtID.Text);mClient.Name = txtName.Text;mList.Add(mClient);ViewState["List"] = mList;gvList.DataSource = mList;gvList.DataBind();}}
Sample Code
<a href="javascript:__doPostBack('mUpdatePanel','');">Refresh</a>
❌ Figure: Bad code
<input type="button" onclick="javascript:__doPostBack('mUpdatePanel','');" value="Refresh" />
✅ Figure: Good code
We have a program called SSW Code Auditor to check for this rule.