How to set column width for particular column in dynamic data model asp.net .?

Hi Ram, there is nothing built in, I created my own attribute and then is the Field template I climb the control tree until I find the Html cell then apply the css class.

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RRam

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Re: How to set column width for particular column in dynamic data model asp.net .?

Jun 23, 2014 07:43 AM|RRam|LINK

hi steve, thanks for replying. By giving width in css will affect all the tables right? I need to fix different width for different tables. Is there any way to acheive.? It will be more helpful, if you can post or mail some sample .

thanks again

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sjnaughton

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Re: How to set column width for particular column in dynamic data model asp.net .?

Jun 23, 2014 07:53 AM|sjnaughton|LINK

No, I create a CSS class like:

.Narrow50
{
width: 50px;
}

Then I use code in the field template:

/// <summary>
/// Applies the CSS class to the current field template.
/// </summary>
/// <param name="control">The control.</param>
/// <param name="Column">The column.</param>
public static void ApplyCss(this FieldTemplateUserControl control)
{
    var cellCss = control.Column.GetAttribute<CellCssAttribute>();
    var htmlParentCell = control.GetContainerControl<HtmlTableCell>();
    var parentCell = control.GetContainerControl<DataControlFieldCell>();

    if (cellCss != null)
    {
        if (parentCell != null)
        {
            var cssClass = parentCell.Attributes["class"];
            if (cssClass != null)
                cssClass += " " + cellCss.Class;
            else
                parentCell.Attributes.Add("class", cellCss.Class);
        }
        else
        {
            var cssClass = htmlParentCell.Attributes["class"];
            if (cssClass != null)
                cssClass += " " + cellCss.Class;
            else
                htmlParentCell.Attributes.Add("class", cellCss.Class);
        }
    }
}

to walk the control tree and add the CSSClass just to that column.

See my blog C# Bits | Twitter @sjnaughton
Always seeking an elegant solution.

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RRam

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Re: How to set column width for particular column in dynamic data model asp.net .?

Jun 23, 2014 09:03 AM|RRam|LINK

hi steve, thanks for the demo code.

Is GetAttributes , GetContainerControl are inbuilt methods or custom methods written .?

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sjnaughton

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Re: How to set column width for particular column in dynamic data model asp.net .?

Jun 23, 2014 10:18 AM|sjnaughton|LINK

oops

/// <summary>
/// Get the Data Control containing the FiledTemplate
/// usually a DetailsView or FormView
/// </summary>
/// <param name="control">
/// Use the current field template as a starting point
/// </param>
/// <returns>
/// A FilterRepeater the control that 
/// contains the current control
/// </returns>
public static T GetContainerControl<T>(this Control control) where T : Control
{
	var parentControl = control.Parent;
	while (parentControl != null)
	{
		var p = parentControl as T;
		if (p != null)
			return p;

		parentControl = parentControl.Parent;
	}
	return null;
}

and

/// <summary>
/// Get the attribute of type T or null if not found
/// </summary>
/// <typeparam name="T">Attribute type</typeparam>
/// <param name="table">Column to search for the attribute on.</param>
/// <returns>Returns the attribute T or null</returns>
public static T GetAttribute<T>(this MetaColumn column) where T : Attribute
{
	return column.Attributes.OfType<T>().FirstOrDefault();
}

That should do it.

I have that manu extension methods now I forget no-one else has them :(

See my blog C# Bits | Twitter @sjnaughton
Always seeking an elegant solution.

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RRam

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Re: How to set column width for particular column in dynamic data model asp.net .?

Jun 24, 2014 01:38 AM|RRam|LINK

Thanks a lot Steve :)

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sjnaughton

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Re: How to set column width for particular column in dynamic data model asp.net .?

Jun 27, 2014 05:02 AM|sjnaughton|LINK

Sorry one thing I did miss out :( was thactual attribute

[AttributeUsage(AttributeTargets.Property)]
public class CellCssAttribute : Attribute
{
    public String Class { get; private set; }

    public CellCssAttribute() 
    { 
    }

    public CellCssAttribute(String css)
    {
        Class = css;
    }
}

See my blog C# Bits | Twitter @sjnaughton
Always seeking an elegant solution.

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