DatagridviewCell alignment

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Hello,

I'm trying to create the gridview columns and cell alignment at runtime but its throwing an error as "object referece not set to an instance of an object. What I did is:

C#

this.dataGridView2.Columns["ProductsSKUName"].DefaultCellStyle.Alignment = DataGridViewContentAlignment.MiddleLeft;
this.dataGridView2.Columns["ProductsSKUName"].Name = DataGridViewContentAlignment.MiddleLeft.ToString();

Posted 20-Dec-10 18:35pm

krishna kishore58

Updated 20-Dec-10 18:39pm

v3

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**JF2015** · Answer 1 · 2010-12-20T18:36:00

Solution 1

Maybe it throws an error because of misspelling "ProductsSKUNam" instead of "ProductsSKUName".

Edited:
You could set a breakpoint at the first line and check out the content of the this.dataGridView2.Columns collection. I think that it may be a problem of upper and lower case.

Posted 20-Dec-10 18:36pm

JF2015

Updated 20-Dec-10 18:42pm

v2

Comments

krishna kishore58 21-Dec-10 0:39am

No its actually ProductsSKUName.. I wrong pasted the code...

Vigneshb6 21-Dec-10 0:39am

Nice Observation

vivekse · Answer 2 · 2010-12-20T18:39:00

Solution 2

Hi ,

The column name ["ProductsSKUNam"] is wrong, not defined in datagridview. Please check it.

Posted 20-Dec-10 18:39pm

vivekse

Comments

krishna kishore58 21-Dec-10 0:43am

Even when i change it to "Product" its throwing error...donno y...

vivekse 21-Dec-10 0:47am

@krishan, if you created columns in design mode then check the column name.
if you binding a data source with list of class object then check the property of that class.
if you are binding with dataset or table then check the select statement column of your query.

krishna kishore58 21-Dec-10 1:08am

if i create the columns at design mode its working fine but not at runtime...

vivekse 21-Dec-10 1:12am

This working for me .
DataTable _dt = new DataTable();
DataColumn _dc = new DataColumn("Roll");
_dt.Columns.Add(_dc);
_dt.Rows.Add();
_dt.Rows[0][0] = "1";
_dt.Rows.Add();
_dt.Rows[1][0] = "2";
dataGridView1.DataSource = _dt;
this.dataGridView1.Columns["Roll"].DefaultCellStyle.Alignment = DataGridViewContentAlignment.TopRight ;

krishna kishore58 21-Dec-10 1:39am

k cool, for creting one column its okay..so if i wanna create more than one then do i need to repeat this steps with with different object names.
DataTable _dt = new DataTable();
DataColumn _dc = new DataColumn("Roll");
_dt.Columns.Add(_dc);
dataGridView1.DataSource = _dt;
this.dataGridView1.Columns["Roll"].DefaultCellStyle.Alignment = DataGridViewContentAlignment.TopRight;

krishna kishore58 21-Dec-10 1:41am

Hey Iam sorry when i use databound then I'm unable to "add rows" and insert data into gridview from mysql...waz the solution 4 this issue..ha

vivekse 21-Dec-10 6:59am

You can't add rows when grid view is data bound.To add rows you have to add objects in your data source , set data source of datagridview null and reassign data source.

prayerlin rex · Answer 3 · 2010-12-20T19:14:00

Solution 3

Hi ,

You have to read the Column with related Index.

Posted 20-Dec-10 19:14pm

prayerlin rex