UpdatePanel Gridview not updating

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For some reason, I can\'t get the Gridview in the Updatepanel to refresh after I\'ve made changes. can someone help?

I\'m using the ToolkitScriptManager control and

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旧时难觅i

2021-01-13 22:19

Here is my code for your question

ASPX FILE

<body>
    <form id="form1" runat="server">
    <asp:ScriptManager ID="ScriptManager1" EnablePageMethods="true" runat="server">
    </asp:ScriptManager>
    <asp:UpdatePanel ID="UpdatePanel1" UpdateMode="Conditional" runat="server">
        <ContentTemplate>
            <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False">
                <Columns>
                    <asp:BoundField HeaderText="Name List" DataField="EmpName" />
                </Columns>
            </asp:GridView>
        </ContentTemplate>
        <Triggers>
            <asp:AsyncPostBackTrigger ControlID="Button1" EventName="Click" />
        </Triggers>
    </asp:UpdatePanel>

    <asp:Button ID="Button1" runat="server" Text="Button" OnClick="Button1_Click1" />
    </form>
</body>

CODE BEHIND FILE

 protected void Page_Load(object sender, EventArgs e)
    {
        if (!Page.IsPostBack)
        {
            var Employee = new { EmpID = 1, EmpName = "Rahul Jain", Department = "IT", Age = 33, Address = "Hello" };
            var customerList = (new[] { Employee }).ToList();
            customerList.Add(new { EmpID = 2, EmpName = "Sheetal Jain", Department = "IT", Age = 33, Address = "Hello" });
            GridView1.DataSource = customerList;
            GridView1.DataBind();
        }
    }
    protected void Button1_Click1(object sender, EventArgs e)
    {
        try
        {
            var Employee = new { EmpID = 1, EmpName = "Rahul Jain", Department = "IT", Age = 33, Address = "Hello" };
            var customerList = (new[] { Employee }).ToList();
            customerList.Add(new { EmpID = 2, EmpName = "Sheetal Jain", Department = "IT", Age = 33, Address = "Hello" });
            customerList.Add(new { EmpID = 2, EmpName = "Minakshi Jain", Department = "IT", Age = 33, Address = "Hello" });
            GridView1.DataSource = customerList;
            GridView1.DataBind();
        }
        catch (Exception ex)
        {
            throw ex;
        }
    }

This Code Dosent Created the postback for me hope it will work for you as well....

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夕颜

2021-01-13 22:37
change the order:
```
 GridView1.DataBind();
 UpdatePanel1.Update();
```
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忘掉有多难

2021-01-13 22:37

As an alternative, you could set the UpdateMode parameter to "Always" (which is the default) to allow any web control that triggers a postback to automatically update the GridView.

This saves you a few lines of code (configuring the triggers) but will also help if you dynamically add controls to your GridView that will also trigger postback events on your page.

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