CODEWITHSUNDEEP
asp.net.netgridview
sly_Chandan
sly_Chandan

Reputation: 3515

Why does GridView Rowupdating event not capture the new values of textbox?

I am using a gridview. When I click on the edit button the update and cancel button appear. Upon modifying the values in textbox which come from EditItemTemplate , the new values dont show in the event handler rowupdating(), instead I get the values which appear when the page was rendered. How do I grab the new values from these textboxes and proceed further? Here is the code.

<asp:GridView ID="GridView1" runat="server" AutoGenerateEditButton="true" AutoGenerateColumns="false" 
        AutoGenerateDeleteButton="true" onrowediting="GridView1_RowEditing" 
        onrowupdating="GridView1_RowUpdating">
    <Columns>


    <asp:TemplateField>
    <ItemTemplate>
        <asp:Label ID="lblId" runat="server" Text='<%# Eval("id") %>'></asp:Label>
    </ItemTemplate>
    <EditItemTemplate>
        <asp:TextBox ID="txtId" runat="server" Text='<%# Eval("id") %>'></asp:TextBox>
    </EditItemTemplate>
    </asp:TemplateField>

    <asp:TemplateField>
    <ItemTemplate>
        <asp:Label ID="lblName" runat="server" Text='<%# Eval("cpuname") %>'></asp:Label>
    </ItemTemplate>
    <EditItemTemplate>
        <asp:TextBox ID="txtName" runat="server" Text='<%# Eval("cpuname") %>'></asp:TextBox>
    </EditItemTemplate>
    </asp:TemplateField>

    <asp:TemplateField>
    <ItemTemplate>
        <asp:Label ID="lblStatus" runat="server" Text='<%# Eval("status") %>'></asp:Label>
    </ItemTemplate>
    <EditItemTemplate> 
      <asp:TextBox ID="txtStatus" runat="server" Text='<%# Eval("status") %>'></asp:TextBox>
     </EditItemTemplate>
    </asp:TemplateField>

    </Columns>


</asp:GridView>


protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
        {
            GridView1.EditIndex = e.NewEditIndex;
        }

        protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
        {
            TextBox text = (TextBox)GridView1.Rows[e.RowIndex].FindControl("txtName");
        }

Upvotes: 4

Views: 14726

Answers (5)

ShiShiBaRe
ShiShiBaRe

Reputation: 1

i'm follow platon and it's work!

Put if(!IsPostBack) before databind(), and insert GridView1.DataBind(); after GridView1.EditIndex = e.NewEditIndex; in GridView1_RowEditing

Upvotes: -1

Greg
Greg

Reputation: 1

This ended up working for me.

protected void MyGridView_RowUpdating(object sender, GridViewUpdateEventArgs e)
{
    string value = e.NewValues[0].ToString();
    // ...
}

Upvotes: 0

Kalpesh Pusalkar
Kalpesh Pusalkar

Reputation: 11

If you have written the code to bind the grid in page load ensure that it is enclosed in if(!IsPostBack) I hope it does help

Upvotes: 1

Saanch
Saanch

Reputation: 1844

Try this

TextBox text = (TextBox)GridView1.Rows[e.EditIndex].FindControl("txtName");

Upvotes: 0

platon
platon

Reputation: 5340

You should use the two way binding here. I.e. Bind instead of Eval:

<asp:TextBox ID="txtId" runat="server" Text='<%# Bind("id") %>'></asp:TextBox>

Here is the link to documentation:

Data-Binding Expressions Overview

Here is my code behind:

protected void Page_Load(object sender, EventArgs e)
    {
        DataTable table = new DataTable();
        table.Columns.Add("Data");
        for(int i = 0; i < 20; i++)
            table.Rows.Add(new object[] { i });
        GridView1.DataSource = table;
    if(!IsPostBack)  // <<<<<<<<<<<<
        GridView1.DataBind();
    }
protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
    {
        GridView1.EditIndex = e.NewEditIndex;
        GridView1.DataBind();
    }       

    protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
    {
        TextBox text = (TextBox)GridView1.Rows[e.RowIndex].FindControl("txtId");
    }

Upvotes: 5

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