YouTipProp Webcontrol Tablecell Rowspan
## ASP.NET TableCell RowSpan Property
The `RowSpan` property is a member of the `TableCell` Web Control in ASP.NET. It is used to get or set the number of rows in a `Table` control that an individual table cell should span.
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## Definition and Usage
The `RowSpan` property allows a single table cell (``) to extend vertically across multiple rows. This is highly useful for creating complex grid layouts, grouping related data, or designing custom report templates where a single category label applies to multiple rows of data.
When rendered, this property translates directly to the standard HTML `rowspan` attribute of the `` element.
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## Syntax
### Declarative Syntax
```xml
```
### Property Values
| Attribute Value | Description |
| :--- | :--- |
| **num** | An integer that specifies the number of rows the table cell should span. The default value is `0` (which indicates that the property is not set). |
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## Code Examples
### Example 1: Basic Declarative Implementation
The following example demonstrates how to set the `RowSpan` property to `"2"` in your markup. This makes the first cell of the first row span across both the first and second rows.
```xml
```
### Example 2: Programmatic Implementation (C#)
You can also set or modify the `RowSpan` property dynamically in your code-behind file.
```csharp
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
// Create a new TableCell
TableCell cell = new TableCell();
cell.Text = "Dynamically Spanned Cell";
// Set the RowSpan property programmatically
cell.RowSpan = 3;
// Add the cell to a TableRow (assuming row1 is defined in your .aspx markup)
row1.Cells.Add(cell);
}
}
```
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## Considerations and Best Practices
1. **Layout Alignment**: When you set `RowSpan="n"` on a cell, the subsequent `n-1` rows must define one fewer `` element in their markup. If you do not adjust the cell count in the subsequent rows, the table layout will shift to the right and become misaligned.
2. **Default Value**: The default value of this property is `0`. When set to `0`, it behaves as if the attribute is not defined, meaning the cell spans only its native single row.
3. **Browser Compatibility**: The `RowSpan` property renders as the standard HTML `rowspan` attribute, which is fully supported by all modern web browsers.