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POUnable to edit tables in SQL Server 2008 database using C#
 

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  1. POUnable to edit tables in SQL Server 2008 database using C#
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    <p>I am creating an application in c# which requires me to embed a database, I added a new <code>Service based Database</code> . I added it to the application, I created a table via the <code>designer</code> and added data to it. Here I started facing problems. I am able to add new records but unable to edit any rows. I noted a weird behavior.</p> <p><img src="https://i.stack.imgur.com/MqPNj.jpg" alt="enter image description here"></p> <ul> <li>When the rows are just 1 or 2, I am able to edit them without any issues.</li> </ul> <p><img src="https://i.stack.imgur.com/FG9sh.jpg" alt="enter image description here"></p> <ul> <li>But when the number of rows becomes more , say 5 of 7, I am not able to edit any rows,</li> </ul> <p>I am getting an error</p> <blockquote> <p>The row values updated or deleted either do not make the row unique or they alter multiple rows</p> </blockquote> <p><img src="https://i.stack.imgur.com/tk1OA.jpg" alt="enter image description here"></p> <p>I have neither mentioned a unique constraint nor a not null constraint. All the columns are of data type <code>text</code>. I am not sure what causes this problem. Can somebody explain me whats goin on??</p> <p>PS: and sometimes,I also get an error as seen in Screenshot 2. For such cases,when I click on <code>Execute SQL</code> , then the data is getting inserted.</p> <hr> <pre><code>***After using an Identity column, the issue is solved. Thanks a lot guys :) </code></pre> <p>Now another issue is coming up, I am able to edit in the designer but I also have a dataGridView binded to the database and I am not able to edit(update) values in it, any suggestions?? This is the code, I am using</p> <pre><code>private void saveButton_Click(object sender, EventArgs e) { this.Validate(); this.core3BindingSource.EndEdit(); this.core3TableAdapter.Update(this.coreDataSet.Core3); }*** </code></pre>
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    1. PO
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      1. PTAnswer
    1. This table or related slice is empty.
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    1. USNiranjan Sonachalam
    1. USNiranjan Sonachalam
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
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    1. This table or related slice is empty.
    1. COSide-note: you should **avoid** using `text`, `ntext` and `image` - [those datatypes have been deprecated](http://msdn.microsoft.com/en-us/library/ms187993.aspx) - use `(n)varchar(max)` and `varbinary(max)` instead
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      1. POUnable to edit tables in SQL Server 2008 database using C#
      1. USmarc_s
    2. COdoes your table have a primary key field set? Can you add your table definition to the question?
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      1. POUnable to edit tables in SQL Server 2008 database using C#
      1. USEddy
    3. COThanks a lot for your solutions and comments guys,the issue is solved in designer view, but I still face the same problem in dataGridView which is binded to the same database. I am unable to edit(update). Please check my updated question.
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      1. POUnable to edit tables in SQL Server 2008 database using C#
      1. USNiranjan Sonachalam
 

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