📄 editingrecords.htm

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<span style="font-family:Helvetica,Arial; font-size:12pt; color:#000000"><b>Editing Records
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An active dataset must be in <i>dsEdit</i> mode before an application can modify records. In your code you can use the <a href=tdataset_edit.htm>Edit</a> method to put a dataset into dsEdit mode if the read-only <a href=tdataset_canmodify.htm>CanModify</a> property for the dataset is True. 
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Once a dataset is in <i>dsEdit</i> mode, a user can modify the field values for the current record that appears in any data-aware controls on a form. Data-aware controls for which editing is enabled automatically call <a href=tdataset_post.htm>Post</a> when a user executes any action that changes the current record (such as moving to a different record in a grid).
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If you have a navigator component on your form, users can cancel edits by clicking the navigator's Cancel button. Canceling edits returns a dataset to dsBrowse state.
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In code, you must write or cancel edits by calling the appropriate methods. You write changes by calling <a href=tdataset_post.htm>Post</a>. You cancel them by calling <a href=tdataset_cancel.htm>Cancel</a>. In code, <i>Edit</i> and <i>Post </i>are often used together. For example,
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<span style="font-family:Courier New; font-size:8pt; color:#000000"><b>with</b>&nbsp;ABSTable1&nbsp;<b>do</b>
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<b>begin</b>
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&nbsp;&nbsp;Edit;
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&nbsp;&nbsp;FieldValues[<span style="font-family:Courier New; font-size:8pt; color:#000080">'CustNo'</span></span><span style="font-family:Courier New; font-size:8pt; color:#000000">]&nbsp;:=&nbsp;<span style="font-family:Courier New; font-size:8pt; color:#000080">1234</span></span><span style="font-family:Courier New; font-size:8pt; color:#000000">;
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&nbsp;&nbsp;Post;
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<b>end</b>;
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In the previous example, the first line of code places the dataset in <i>dsEdit</i> mode. The next line of code assigns the number 1234 to the <i>CustNo</i> field of the current record. Finally, the last line writes, or posts, the modified record. Posting writes the change back to the database.
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