error related to updating a column of gridview

Question

0.00/5 (No votes)

See more:

.NET3.5

I m implementing a gridview on a web page.here is its code

XML

<asp:GridView ID="GridView2" runat="server" AutoGenerateColumns="false"
           AllowPaging="True" Height="568px" PageSize="25"
           onrowupdating="GridView2_RowUpdating" AutoGenerateEditButton="True"
           onrowediting="GridView2_RowEditing">
       <Columns>
       <asp:TemplateField HeaderText="Name">
       <ItemTemplate>
           <asp:TextBox ID="TextBox2" runat="server" Text='<%#Eval("cstnam") %>' ReadOnly="true"></asp:TextBox>
       </ItemTemplate>
       </asp:TemplateField>

        <asp:TemplateField HeaderText="Date">
            <ItemTemplate >
                <asp:TextBox ID="TextBox13" runat="server" Text='<%#Eval("compdat") %>' ReadOnly="true"></asp:TextBox>
            </ItemTemplate>
            <ItemStyle Width="40px" Font-Bold="true" />
         </asp:TemplateField>

          <asp:TemplateField HeaderText="LogBy">
            <ItemTemplate>
                <asp:TextBox ID="TextBox14" runat="server" Text='<%#Eval("complogby") %>' ReadOnly="true"></asp:TextBox>
            </ItemTemplate>
            <ItemStyle Width="40px" Font-Bold="true" />
         </asp:TemplateField>

          <asp:TemplateField HeaderText="AttendBy">
            <ItemTemplate>
                <asp:TextBox ID="TextBox15" runat="server" Text='<%#Eval("compatdby") %>' ReadOnly="true"></asp:TextBox>
            </ItemTemplate>
            <ItemStyle Width="40px" Font-Bold="true" />
         </asp:TemplateField>

          <asp:TemplateField HeaderText="Status">
            <ItemTemplate>
                <asp:TextBox ID="TextBox16" runat="server" Text='<%#Eval("compsts") %>' ReadOnly="true"></asp:TextBox>
            </ItemTemplate>
            <ItemStyle Width="40px" Font-Bold="true" />
         </asp:TemplateField>

         <asp:TemplateField HeaderText="AttendDate">
            <ItemTemplate>
                <asp:TextBox ID="TextBox17" runat="server" Text='<%#Eval("compatddat") %>' ReadOnly="true"></asp:TextBox>
            </ItemTemplate>
            <ItemStyle Width="40px" Font-Bold="true" />
         </asp:TemplateField>


         <asp:TemplateField HeaderText="Ticket">
            <ItemTemplate>
                <asp:TextBox ID="TextBox18" runat="server" Text='<%#Eval("ticket") %>' ReadOnly="true"></asp:TextBox>
            </ItemTemplate>
            <ItemStyle Width="40px" Font-Bold="true" />
         </asp:TemplateField>


         <asp:TemplateField HeaderText="RepReceived">
            <ItemTemplate>
                <asp:TextBox ID="TextBox19" runat="server" Text='<%#Eval("rptRecieved") %>'></asp:TextBox>
            </ItemTemplate>

            <ItemStyle Width="40px" Font-Bold="true" />
         </asp:TemplateField>


         <asp:TemplateField HeaderText="ReceivedBy">
            <ItemTemplate>
                <asp:TextBox ID="TextBox20" runat="server" Text='<%#Eval("rptRecievedBy") %>' ReadOnly="true" ></asp:TextBox>
            </ItemTemplate>
            <ItemStyle Width="40px" Font-Bold="true" />
         </asp:TemplateField>


         <asp:TemplateField HeaderText="Recieveddate">
            <ItemTemplate>
                <asp:TextBox ID="TextBox10" runat="server" Text='<%#Eval("rptRecievedDate") %>' ReadOnly="true"></asp:TextBox>
            </ItemTemplate>
            <ItemStyle Width="40px" Font-Bold="true" />
         </asp:TemplateField>

         <%--<asp:TemplateField HeaderText="">
            <EditItemTemplate>
               &nbsp;&nbsp;
               <asp:TextBox ID="txtrptreciev" runat="server" Text='<%#Eval("rptRecieved") %>'></asp:TextBox>
                               &nbsp;
                <asp:LinkButton ID="lnkupdt" runat="server" CommandName="Update" Visible="true"
                   Text='<%#Eval("rptRecieved") %>'>LinkButton</asp:LinkButton>
               &nbsp;
           </EditItemTemplate>
         </asp:TemplateField>--%>
         <asp:TemplateField HeaderText="">
         <EditItemTemplate>
             <asp:TextBox ID="txtrptRecieved" Text="" runat="server"></asp:TextBox>
         </EditItemTemplate>
         </asp:TemplateField>
         <asp:CommandField  HeaderText="Update" ShowEditButton="true"/>
       </Columns>
       </asp:GridView>

Now i want to update a single column in this gridview whose code is as follow

C#

protected void GridView2_RowUpdating(object sender, GridViewUpdateEventArgs e)
   {

       GridViewRow myRow = GridView2.Rows[e.RowIndex];

       TextBox rptRecieved = (TextBox)myRow.FindControl("txtrptreciev");

       TextBox cstnam = (TextBox)myRow.FindControl("cstnam");

       SqlDataAdapter adp = new SqlDataAdapter("update tbcomp set rptRecieved=" + rptRecieved + " where cstnam=" + cstnam + "", con);

       DataSet ds = new DataSet();

       adp.Fill(ds);

       GridView2.EditIndex = -1;
   }

   protected void GridView2_RowEditing(object sender, GridViewEditEventArgs e)
   {
       GridView2.EditIndex = e.NewEditIndex;
   }

but its nt updating the column.Please tell me what to do

thanks in advance

Posted 25-Jun-12 21:09pm

abhilasha mourya

Updated 25-Jun-12 21:11pm

bhagirathimfs

v2

Add a Solution

2 solutions

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Hiren solanki · Answer 1 · 2012-06-25T21:35:00

SqlDataAdapter adp = new SqlDataAdapter("update tbcomp set rptRecieved=" + rptRecieved + " where cstnam=" + cstnam + "", con);

Probably you should wrap the string value in SQL query by ' sign. so your query should be as below to have it properly working.

SqlDataAdapter adp = new SqlDataAdapter("update tbcomp set rptRecieved='" + rptRecieved + "' where cstnam='" + cstnam + "'", con);

Thanks,
Hiren

*Karthik Harve* · Answer 2 · 2012-06-25T21:38:00

Solution 2

Hi,

Where you are re-binding the GRID...???

in Row_Updating event will fire when an Update Command is received, but it will not update by itself. you must bind the grid again.

Just update the datasource used of the grid, or Get the new datasource from database and bind again.

Happy Coding.

Posted 25-Jun-12 21:38pm

Karthik Harve

Comments

abhilasha mourya 26-Jun-12 3:57am

i m binding it on button's click.Will you please elaborate how to bind it again

abhilasha mourya 26-Jun-12 4:07am

hey

i got what u were saying but still its not updating the value

Karthik Harve 26-Jun-12 4:21am

can you show your code for updating the datasource of the grid..??

abhilasha mourya 26-Jun-12 4:26am

sory
I m not updating the datasource. i m just giving value to datasource.
anyways here is code.Please suggest any solution

GridViewRow myRow = GridView2.Rows[e.RowIndex];

TextBox txtrptRecieved = (TextBox)myRow.FindControl("txtrptreciev");

TextBox complogby = (TextBox)myRow.FindControl("TextBox2");

SqlDataAdapter adp = new SqlDataAdapter("update tbcomp set rptRecieved='" + txtrptRecieved + "' where complogby='" + complogby + "'", con);

DataSet ds = new DataSet();

adp.Fill(ds);

GridView2.EditIndex = -1;
GridView2.DataSource=ds.Tables[0];
GridView2.DataBind();