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PODataGridView Validation - remove error indicator
 

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    <p>I'm validating a DataGridView using the following code ...</p> <pre><code>void centreDataGridView_CellValidating(object sender, DataGridViewCellValidatingEventArgs e) { if (centreDataGridView.Columns[e.ColumnIndex].Name == "code") { Regex codeRegex = new Regex("^[0-9]{5}[0-9A-Z]$"); if (!codeRegex.IsMatch(e.FormattedValue.ToString())) { centreDataGridView.Rows[e.RowIndex].ErrorText = "error text here"; } } } void centreDataGridView_CellEndEdit(object sender, DataGridViewCellEventArgs e) { centreDataGridView.Rows[e.RowIndex].ErrorText = string.Empty; } </code></pre> <p>This works, except that if I enter the new row and then leave it again without entering any data, the error warning icon remains visible in the new row selector. How can I clear it?</p> <p>Based on the suggestions received so far, I've modified the above code as follows ...</p> <pre><code>void centreDataGridView_CellValidating(object sender, DataGridViewCellValidatingEventArgs e) { if (centreDataGridView.Columns[e.ColumnIndex].Name == "code") { if (!(centreDataGridView.Rows[e.RowIndex].IsNewRow) || (e.FormattedValue.ToString() != string.Empty)) { Regex codeRegex = new Regex("^[0-9]{5}[0-9A-Z]$"); if (!codeRegex.IsMatch(e.FormattedValue.ToString())) { centreDataGridView.Rows[e.RowIndex].ErrorText = "error text here"; } } } } </code></pre> <p>This does solve the problem of the error indicator displaying beside the new row when no data has been entered. However, when I enter invalid data, in any row, no error indicator is shown when I move off the row for the first time after entering the invalid data. If I move off the row with the invalid data, then move back to it, then move off it again, then the error indicator is shown.</p>
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    1. USBrendan Reynolds
    1. USBrendan Reynolds
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      1. VTUpMod
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Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

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