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C# .Net Source Code for /Articles/WindowsForms/NumericKeyMinusDataGridProblem.aspx

This ASP.NET page was written by Mike Gonzalez.
<% @ Page Language="C#" Debug="True" %>
<% @ Register TagPrefix="DotNetFun" TagName="Header" Src="/Header.ascx" %>
<% @ Register TagPrefix="DotNetFun" TagName="Footer" Src="/Footer.ascx" %>
<script language="C#" runat="Server">
	private void Page_Load() {
		ltrCategories.Text = CtrlHeader.ArticleCategory1 + "|" + CtrlHeader.ArticleCategory2 + "|" + 
			CtrlHeader.ArticleCategory3 + "|" + CtrlHeader.ArticleCategory4;
		ltrCategories.Text = DotNetFun.Common.AddCommas(ltrCategories.Text, '|');
	}
</script>
<dotnetfun:header id="CtrlHeader" runat="Server" enableviewstate="False" allowrobotindex="true" pagetitle="Cannot enter minus sign from Numeric Key Pad in a DataGridTextBoxColumn" pagedescription="If you create a Windows Form with a DataGrid control with text box columns you will not be able to type in the minus sign key from the numeric key pad. Learn how to overcome this problem." pagekeywords="c#, asp.net, event, delegate, .net, framework, class" authorname="Mike Gonzalez" authordate="1-2-2003" articlecategory1="Windows Forms" articlecategory2="Visual Studio .NET" articlecategory3="" articlecategory4="" articletitle="Cannot enter minus sign from Numeric Key Pad in a DataGridTextBoxColumn" articledescription="If you create a Windows Form with a DataGrid control with text box columns you will not be able to type in the minus sign key from the numeric key pad. Learn how to overcome this problem." allowviewsource="true"/>
<h2><font face="arial" color="darkblue">
	<%# CtrlHeader.ArticleTitle %>
</font></h2>
<font face="arial" size="2" color="darkblue">
	<b><%# CtrlHeader.ArticleDescription %></b><br/>
	<em>Category:</em> <asp:literal id="ltrCategories" runat="Server" enableviewstate="False"/> 
	<em>Posted</em> <%# CtrlHeader.AuthorDate.ToShortDateString() %>, 
	<em>By</em> <%# CtrlHeader.AuthorName %><br/>
</font>
<hr noshade="true" size="5" color="<%# CtrlHeader.SiteDataSet.Tables[0].Rows[0][" navbackgroundcolor"] %>" />
<font face="arial" size="2">
In order to fix this problem you must defined a 'TableStyle' then 'GridColumnStyle' columns for the style for your DataSource 
then set the 'Multiline' property of the inherent TextBox control to 'true':
<xmp style="background-color:#FFFFDD; font-size:10pt">
	// first find out the name of the DataGridTextBoxColumn control then do something like this
	// in your Form's Loading event handler:
	private void frmRundown_Dates_Load(object sender, System.EventArgs e)
	{
		// other Loading event code ....
		dataGridTextBoxColumnDummyControl.TextBox.Multiline = true;
	}
</xmp>
And that's all there is too it! You can now press the minus sign key in the numeric key pad and it will be added to the 
text successfully.
</font>
<dotnetfun:footer id="CtrlFooter" runat="Server" enableviewstate="False"/>